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1. To add a target portal click Discover Portal To remove a target portal select the address above and Remove then click Remove _ NS servers The system is registered on the Following iSNS servers Refresh To add an NS server click Add Server Add Server To remove an iSNS server select the server above and then click Remove Remove More about Discovery and iSNS OK Cancel Apply Click OK button Click Targets tab select the second path and then click Connect button Enable Enable multi path checkbox Then click OK button oO SX c Done it can connect to an iSCSI disk with MPIO Setup MC S If running MC S please continue Select one target name click Properties button Click MCS button to add additional connections Click Add button Click Advanced button Select Initiator IP and Target portal IP and then click OK button Click Connect button v i e x e ee Ie qe Click OK button Copyright 2 2014 D Link System Inc All Rights Reserved 149 D Link Advanced Settings 192 168 22 123 e 192 168 22 1 3260 ei CHAP helps ensure connection security by providing authentication between a target and an imitator Perform mutual authentication Ta Use mutual CHAP either specify an initiator secret on the Gontiguration page or use RADIUS Use RADIUS to generate user authentication credentials Es Use RADIUS to authenticate target crede
2. ID Auth Node Name Portal Alias 0 CHAP iqn 1986 06 com d ink dsn 6500 006919a40 dev0 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 1 CHAP iqn 1986 06 com d link dsn 6500 006919240 dev1 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 None iqn 1986 06 com d link dsn 6500 006919a40 dev2 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 qi idiidiidi ia 2 3 None Ion 1986 06 com d link dsn 6500 006919240 dev3 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 4 None iqn 1986 06 com d link dsn 6500 006919240 dev4 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 o Check W gt User o Select the CHAP user s that will have access to the node It can be more than one but there must be at least one user to enable chap protection on the node CHAP User Selection Select the CHAP user s that you would like to have access to this node If you do not select a user then CHAP protection will not be enabled on this node Setting for Node ign 2004 08 com qsantechnology devO ctr1 Enable Users chap1 L chap2 o Click the OK button To disable CHAP authentication please follow the procedure below o Select the node on which you want to disable CHAP o Check W gt Authentication Method o Change it to None from the drop down list o Click the OK button W gt Change Portal Use this iSCSI node option to change the network ports available o Select one of the nodes from one control
3. Management IP Address 192 168 0 32 User Name admin Password 123456 WARNING or ERROR events displayed on the LCD are automatically filtered by the LCD default filter The filter setting can be changed in the Web UI under System Configuration gt Log and Alert Settings Copyright 2014 D Link System Inc All Rights Reserved 30 D Link This table displays the LCD menu hierarchy Main lt IP Addr gt lt Model gt AY L1 L2 L3 Firmware Version lt n n n gt System Info RAM Size nnnn MB Alarm Mute AYes Nov A Reset tes Reset Nov Shutdown A Shutdown E Nov lt RAID 0 Quick Install oe RAID 3 only available Apply The if not alread dudas Confi en y RAID 6 B RAID 041 nnn GB Local lt RAID 0 RAID 1 papa Unde ger RAID 5 B IS RAID 6 Fe RAID 0 1 only available i JBOD lt n gt Ae if not already lt RAID 0 set f RAID 1 New n disk RAID 3 Ay RAID 5 lt nnn gt GB RAID 6 RAID 0 1 gt IP Config lt Static IP DHCP BOOTP gt IP Address View IP lt 192 168 001 234 Setting gt IP Subnet Mask lt 255 255 255 0 gt IP Gateway lt XXX XXX XXX XXX gt A DHCP Wes Nov A BOOTP Ke Nov h IP S one IP Address Config IP Subnet Static IP Mask IP Gateway Copyright 2014 D Link System Inc All Rights Reserved D Link Document User Manual L4 L5 A Yes Nov Volume Size Apply Ins nnn GB i AYes Nov Apply Th Adjust PPly E Volume Size Config AYes Nov Adjust IP add
4. Create button and then select Disk Type to Backup Target Copyright 2014 D Link System Inc All Rights Reserved 119 D Link D Link Document User Manual Create a Virtual Disk Create a Virtual Disk Virtual Disk Name SourceVD Virtual Disk Name TargetVD Data Storage R5 iv Data Storage R5 Ku Size 10 GB Size 10 cB v Stripe Size KB 64 y Stripe Size KB 64 ba Block Size Bytes 512 iv Block Size Bytes 512 KE Cache Mode O write through Cache 9 write Cache Mode write through Cache 9 write Priority High Priority O Medium Prior Priority High Priority O Medium Prior Bg Rate 4 v D Bg Rate 4 M D Read Ahead Enabled N DI Read Ahead Disabled v D AV Media Mode Disabled iv AV Media Mode Disabled v Erase Do Not Erase iv Erase Do Not Erase v Disk Type RAD Disk Type Backup Target Figure 1 Source Side Figure 2 Target Side 2 After creating the target virtual disk please also setup snapshot space The snapshot of the source virtual disk can replicate to the target virtual disk In the Virtual Disks tab select the backup virtual disk And then click W Set Snapshot Space 3 Enter a Size which is reserved for the snapshot space and then click the OK button 4 Attach LUN of the source and target virtual disk separately Name Size GB Write Priority Bg Rate Type Name Size GB Write P v SourceVD 10 WB HI 4 RAID v TargetVD 1
5. Read write 8 Done The Snapshot can be used Cleanup Snapshots To clean up all the snapshots please follow the procedures 1 There are two methods to cleanup snapshots In Virtual Disks tab select a virtual disk and then click W gt Cleanup Snapshots or in Snapshots tab click Cleanup Snapshots button 2 Click OK to apply It will delete all snapshots of the virtual disk and release the snapshot space Copyright 2014 D Link System Inc All Rights Reserved 111 D Link Schedule Snapshots a D Link Document User Manual The snapshots can be taken by schedule such as hourly or daily Please follow the procedures 1 There are two methods to set schedule snapshots In Virtual Disks tab select a virtual disk and then click W gt Schedule Snapshots or in Snapshots tab click Schedule Snapshots button 2 Check the schedules that you want They can be set monthly weekly daily or hourly Check Auto Mapping to attach LUN automatically when the snapshot is taken and the LUN will be able to be accessed by Allowed Hosts 3 Click OK to apply Schedule Snapshots VD 01 Months to Take Snapshots Weeks to Take Snapshots Days to Take Snapshots Hours to Take Snapshots Minutes to Take Snapshots Auto Mapping All C o1 02 O 03 O 04 los U os U o7 U 08 oo O 10O 11 O 12 C All liLl2L 3Ll4 Ls all C Sun U Mon L Tue U wed LJ Thu U rri U sat All C oo U 01
6. Red A RAID group is degraded or has failed Temperature indicator Green Temperature is normal Red Temperature is too high Voltage indicator Green Voltage values are normal Red Voltage values are out of range UPS indicator Green UPS is functioning or no UPS is connected Red UPS connection has failed Fan indicator Green Fan is working well Red Fan failed Power indicator Green Power supplies are connected and working well Red A power supply has failed or is no longer connected Dual controller indicator Green Dual controllers are active and working well Orange One of the dual controllers has failed Return to home page Logout of the management web UI Mute alarm beeper This table describes the indicators and icons TIP SEN If the status indicators in Internet Explorer IE are displayed in gray not in blinking red please enable Tools gt Internet Options gt Advanced gt Play animations in webpages options in IE The default value is enabled but some applications disable it Copyright 2014 D Link System Inc All Rights Reserved 34 D Link Ze D Link Document User Manual How to Use the Guided Configurations To help users get started quickly two guided configuration tools are available in the Web UI and LCD Quick Installation gives you an easy way to create a volume Volume Creation Wizard provides a smarter policy to help users to create a volume
7. When the user modifies the data from the host the data will pass through the file system and the memory of the host write caching Then the host flushes the data from memory to physical disks no matter if the disk is local disk DAS or SAN From the viewpoint of the storage device it cannot control the behavior on the host side If a snapshot is taken and some data is still in memory and not on the disk then the snapshot may have an incomplete image of the original data The problem does not belong to the storage device To avoid this data inconsistency issue between snapshot and original data the user has to make the operating system flush the data from the memory of the host write caching into the disk before taking a snapshot Host data I O route User modified data E File System A Memory cache v Physical Physical Physical disk disk disk SATA iSCSI SAS or Fibre Copyright 2 2014 D Link System Inc All Rights Reserved 113 D Link a D Link Document User Manual On Linux and UNIX platform a command named sync can be used to make the operating system flush data from write caching into disk For Windows platform Microsoft also provides a tool sync which can do exactly the same thing as the sync command in Linux UNIX It will tell the OS to flush the data on demand For more detail about sync tool please refer to http technet microsoft com en us sysinternals bb897438 aspx Bes
8. groups need to use the global spare disks for rebuilding they could get the spare disks out from the common spare disks pool for such requirement Copyright 0 2014 D Link System Inc All Rights Reserved 151 D Link a D Link Document User Manual DG DeGraded mode Not all of the array s member disks are functioning but the array is able to respond to application read and write requests to its virtual disks SCSI Small Computer Systems Interface SAS Serial Attached SCSI S M A R T Self Monitoring Analysis and Reporting Technology WWN World Wide Name HBA Host Bus Adapter SES SCSI Enclosure Services NIC Network Interface Card BBM Battery Backup Module iSCSI SAS Terminology Item Description FC P2P Point to Point FC AL Arbitrated Loop FC SW Switched Fabric iSCSI Internet Small Computer Systems Interface LACP Link Aggregation Control Protocol MPIO Multi Path Input Output MC S Multiple Connections per Session MTU Maximum Transmission Unit CHAP Challenge Handshake Authentication Protocol An optional security mechanism to control access to an iSCSI storage system over the iSCSI data ports INS Internet Storage Name Service SAS Serial Attached SCSI Dual Controller Terminology Item Description SBB Storage Bridge Bay The objective of the Storage Bridge Bay Working Group SBB is to create a specification that defines mechanical electrical and low level enclosure management requirements for an enclosure controller
9. random I O applications such as databases file servers and web servers etc Generally the SSD caching is useful for the following features 1 Due to the HDD IOPS read performance cause the bottleneck 2 In working space read I O is much more than write 3 The best performance is in the case the working data size is repeatedly accessed and smaller than the size of SSD cache capacity Solution SSD caching is the secondary cache used to enable better performance One and more SSDs could be assigned to a single virtual disk to be its SSD caching space Please note that the cache volume is not available for regular data storage Currently the maximum SSD cache size allowed in a system is 2 4TB Methodology When the read or write I O performs this feature copies the data from HDD into SSD At the next time any subsequent I O read of the same logical block addresses can be read directly from SSD It increases the overall performance with a much lower response time If the SSDs fail unfortunately you won t worry about the data loss because the data caching in the SSD is a copy of the original which is residing on HDD SSD caching is divided into group of sectors of equal sizes Each group is called a cache block each block is divided into sub blocks The I O type configured for a virtual disk would affect size of the cache block and size of sub blocks Copyright 2014 D Link System Inc All Rights Reserved 131 D Link
10. 12 Max 16 pTiiiiiit ii Min 12 Max 16 r o Enter the required information for User Name Secret and Re type Secret o If you would like this CHAP user to have access select one or multiple nodes If selecting none you can add it later by iSCSI Configuration gt iSCSI Nodes gt Users o Click OK button Challenge Handshake Authorization Protocol CHAP You can create CHAP users to protect your iS CSI targets from unauthorized access To create a user click on the Create User button below Users Access to Nodes Y gt Modify User Information Modify the selected CHAP user information W gt Delete User Delete the selected CHAP user Volume Configuration The Volume configuration menu option is for accessing the Physical Disks RAID Groups Virtual Disks Snapshots Logical Units and Replications option tabs Physical Disks RAID Groups Virtual Disks Snapshots Logical Units Replications Copyright 0 2014 D Link System Inc All Rights Reserved 60 D Link a D Link Document User Manual Physical Disks The Physical Disks tab provides the status of the hard drives in the system The two drop down lists at the top enable you to switch between the local system and any expansion JBOD systems attached The other is to change the drive size units MB or GB Show disk for Local M Show disk size in ceM Sot Size GB RAIDGroup RAID Set Virtual Disk Status Health Usage Vend
11. Ges Rebuild Partition l Virtual Disk Disable Enable Fast Rebuild Fast Rebuild S DAY TIP La With less changed partition the Fast Rebuild feature may go faster If the virtual disk is full of changed partition The rebuild may take the same time without the Fast Rebuild feature Copyright 2014 D Link System Inc All Rights Reserved 129 D Link Configuration a D Link Document User Manual When creating a virtual disk enable the Fast Rebuild The default is disabled Create a Virtual Disk Virtual Disk Name Data Storage Size Stripe Size KB Block Size Bytes Cache Mode Priority Bg Rate Read Ahead AV Media Mode Erase Fast Rebuild Disk Type Constraint VD 01 RS 30 64 512 Iv GB v Iv Iv O write through Cache 9 write back Cache D High Priority O Medium Priority O Low Priority 4 Enabled Disabled Do Not Erase vj m MD iv iv Enabled Disabled RAID OK Cancel Here are some constraints about Fast Rebuild Only thick fat RAID group supports this feature Thin provision RAID group already has this feature implemented When rebuilding happens to a fast rebuild virtual disk clean partitions are not rebuilt since there is no data saved there Though clean partitions are never rebuilt their health status is good If all partitions of the fast rebuild virtual disk are clean then no rebuild will hap
12. MUTE button USB connector N POPULAR TWIN Disk Drive Assembly Remove a drive tray Then install a HDD To install SAS drives align the edge of the drive to the back end of tray the backplane can directly connect to the drives To install SATA drives with 3G 6G MUX boards align the board edge to the back end of tray the backplane can connect the drives through the boards Copyright 2014 D Link System Inc All Rights Reserved 13 D Link a D Link Document User Manual SAS Drive SATA Drive The front of each disk tray has four components This table below provides details about the front components of a disk tray Number Description 1 Power LED Green Drive is inserted and operational Red Drive failure Off No drive in the tray 2 Access LED Blue blinking The drive is being accessed Off The drive is not being accessed or there is no drive in the tray 3 Tray removal handle 4 Latch to release the tray 3TB 6G MUX Board Limitation DSN 6200 6500 Series System JBOD Single upgradable Dual Single Dual lt 2TB SATA No 6G MUX board No 6G MUX board gt 2TB SATA No 6G MUX board No 6G MUX board lt 2TB SAS No No No No gt 2TB SAS No No No No HDD Type 6G MUX Board 3G MUX Board SATA 3TB 2794 GB 2794 GB Copyright 2014 D Link System Inc All Rights Reserved 14 D Link a D Link Document User Manual SATA 6Gb s SATA 6Gb s SATA 3Gb s SATA 3Gb s SATA 6Gb s SATA 3Gb s S
13. RAID Group Policy options Delete Modify Create Cloning Options Options Extend Set SSD Caching Verify Parity Delete Set Properties Space Reclamation Attach LUN Detach LUNs List LUNs Set Clone Set Snapshot Space Cleanup Snapshots Take a Snapshot Scheduled Snapshots List Snapshots More information Set Snapshot Space Scheduled Snapshots Take a Snapshot Cleanup Snapshots Options Set Quota Rollback Delete Attach LUN Options Detach LUN Create Rebuild Replication Options Shaping Setting Configuration Options Start Stop Set Task Shaping Add Path Delete Path Schedule Delete Add Connection Delete Connection Show information for lt Local JBODn gt Temperature Internal Case lt C F gt Controller 1 Monitors Controller 2 Monitors Backplane Options Auto Shutdown UPS Type Shutdown Battery Level Shutdown Delay Seconds Shutdown UPS UPS Status UPS Battery Level Enable Disable Show information for lt Local JBODn gt Temperature Internal Case lt C F gt Download System Information Event Log Level to Show lt Information Warning Error gt Download Mute Buzzer Clear Controller Module Firmware Update JBOD Firmware Update Controller Mode Apply Reset Import or Export Import File Options Restore 45 D Link Reboot and Shutdown Performance Disk Monitor iSCSI Quick Installation
14. T C P I S D The real case may be longer than the estimate time Here we take an example of the following I 250 IOPS Random IOPS per HDD S 64KB Web service D 16 HDDs C 480GB 1 SSD P 2 Populate on read threshold Warm up time T 480GB 2 250 64KB 16 3932 16 seconds 65 536 minutes Configuration Take an example of enabling SSD caching T 2 3 4 5 After creating a virtual disk clickW gt Set SSD Caching of the selected virtual disk Check Enable box Select the policy by drop down menu Click Select Disks button and then check the SSDs which are provided for SSD caching Click OK button to enable SSD caching Policy Cache Block Size Sub block Size Populate on read Threshold Populate on write Threshold Selected Disks Copyright 2014 D Link System Inc All Rights Reserved 136 D Link a D Link Document User Manual Constraints Here are some constraints about SSD caching Only SSD can be used for SSD caching space of a virtual disk A SSD can be assigned to one and only one virtual disk as its caching space Up to 8 SSDs can be used as a SSD cache of a virtual disk Support up to 2 4TB of SSD caching space in one system Support D Link bundled SSD only Normal SSD will be treated as ordinary drives and cannot used in SSD caching Copyright 2 2014 D Link System Inc All Rights Reserved 137 D Link Troubleshooting D Link D
15. Volume Creation Wizard System Configuration a D Link Document User Manual Reboot Shutdown Reboot options Both Controller 1 and Controller 2 Controller 1 Controller 2 Show disk for Local JBODn gt Controller 1 Controller 2 Step 1 Step 2 Step 3 Step 4 Confirm Step 1 Step 2 Step 3 Confirm The System Configuration menu option is for accessing the System Settings Network Settings Login Settings Email Notification Settings and Log and Alert Settings option tabs sim Network Settings Login Settings Email Notification Settings Log and Alert Settings Copyright 0 2014 D Link System Inc All Rights Reserved 46 D Link Ze D Link Document User Manual System Settings The System Settings tab is used to setup the system name and date Change General System Settings On this screen you can change the name of the device set the current date and time manually or automatically using an NTP Network Time Protocol server and identify the device by flashing an indicator System Name System Name Qsan Date and Time C Change Date and Time 2014 20 15 34 45 GMT 08 00 Taipei 20140 1 M 200 is v 33 v 5M System Identification Flash the status light on the front display OK Apply The options available on this tab are System Name Change the System Name highlight the old name and type in a new one Date and Time To change the curre
16. When trying to do data recovery the same volume configurations as the original must be set and all member disks must be installed by the same sequence as original or else data recovery will fail The volume restoration does not guarantee that the lost data can be restored Please get help from the expert before executing the function Restore the Volume Configuration The volume restoration can restore your previous volume configurations when a RAID group corruption or a mis delete occurs Before restoration please make sure that all the member disks are in guarantee all the lost data will be recovered Please contact for support before using this function 1 2 3 4 5 6 7 8 next last gt gt RAID Group Name Virtual Disk Volume Size GB Disks Used Disk Slot Event Log EEE NN RAID 5 Local 1 2 3 2014 02 17 18 52 35 CST The virtual disk is created EM RAID5 1 100 3 Local 1 2 3 2014 02 17 18 52 29 CST The virtual disk is created Ex R5 RAID5 VD 02 50 1 Local 1 2014 02 17 18 35 34 CST Physical disk is removed from the system pesi R5 RAID5 VD 01 30 1 Local 1 2014 02 17 18 35 34 CST Physical disk is removed from the system SS a R5 RAID5 VD 02 50 2 Local 1 2 2014 02 17 18 35 26 CST Physical disk is removed from the system A R5 RAID5 VD 01 30 2 Local 1 2 2014 02 17 18 35 26 CST Physical disk is removed from the system iex R5 RAID5 VD 02 50 3 Local 1 2 3 2014 02 11 17 03 30 CST The snapshot space has initiali
17. a D Link Document User Manual Welcome to DSN 6700 Password English Log In To access the Web UI you have to enter a user name and password The initial defaults for administrator login are User Name admin Password 123456 E D Link Building Networks for People DSN 6520 V i System Configuration 2 iSCSI Configuration amp Volume Configuration Indicators and Icons Li Enclosure Management M System Maintenance 8 Performance Monitor Quick Installation g Voume Creation Wizard Menu Bar Operation Options Area Choose the functions from the Menu Bar on the left side of the window to make any configuration changes Leal System Configuration 2 iSCSI Configuration gs Volume Configuration m Enclosure Management LY System Maintenance 3 Performance Monitor Quick Installation Z volume Creation Wizard Copyright 2014 D Link System Inc All Rights Reserved 33 D Link a D Link Document User Manual TIP gt e La The Host Port Configuration menu bar option is only visible when the controller has multiple interfaces The iSCSI Configuration menu bar option is only visible when the controller has iSCSI ports There are up to seven indicators and three icons at the top right corner The last indicator Dual controller is only visible when two controllers are installed Description RAID indicator Green All RAID groups are functioning
18. and owns one RAID level attribute Each RG can be divided into several VDs The VDs in one RG share the same RAID level but may have different volume capacity All VDs share the CV Cache Volume to execute the data transaction LUN Logical Unit Number is a unique identifier in which users can access through SCSI commands ISCSI Concepts iSCSI Internet SCSI is a protocol which encapsulates SCSI Small Computer System Interface commands and data in TCP IP packets for linking storage devices with servers over common IP infrastructures iSCSI provides high performance SANs over standard IP networks like LAN WAN or the Internet IP SANs are true SANs Storage Area Networks which allow several servers to attach to an infinite number of storage volumes by using iSCSI over TCP IP networks IP SANs can scale the storage Capacity with any type and brand of storage system In addition it can be used by any type of network Ethernet Fast Ethernet Gigabit Ethernet and 10 Gigabit Ethernet and combination of operating systems Microsoft Windows Linux Solaris Mac etc within the SAN network IP SANs also include mechanisms for security data replication multi path and high availability iSCSI device 1 target iSCSI device 2 target Storage protocol such as iSCSI has two ends in the connection These ends are initiator and target In iSCSI we call them iSCSI initiator and iSCSI target The iSCSI initiator requests or initi
19. gt Clear Clone Clear the clone function W gt Start Clone Start the clone function W gt Stop Clone Stop the clone function WV gt Change Replication Options Change the clone to Replication relationship WV gt Schedule Clone Set the clone function by schedule W gt Set Snapshot Space Set snapshot space for preparing to take snapshots WV gt Cleanup Snapshots Clean all snapshots of the virtual disk and release the snapshot space WV gt Take a Snapshot Take a snapshot on the virtual disk W gt Schedule Snapshots Set the snapshots by schedule W gt List Snapshots List all snapshots of the virtual disk V gt More Information Show the detail information of the virtual disk Take an example of creating a virtual disk Copyright 0 2014 D Link System Inc All Rights Reserved 70 D Link a D Link Document User Manual 1 Click Create button Create a Virtual Disk Virtual Disk Name VD 01 Data Storage R5 Size 30 GB Stripe Size KB 64 Block Size Bytes 512 Cache Mode write through Cache amp Write back Cache D Priority High Priority Medium Priority Low Priority Bg Rate 4 DI Read Ahead Enabled D AV Media Mode Disabled Space Reclaim Enabled Disk Type RAD Backup Target Enter a Virtual Disk Name for the virtual disk Select a Data Storage from the drop down list Enter your required Size E ox We pe Optionally configure the follo
20. 168 55 2 Start Stop Reply from 192 168 55 2 time clmz Reply from 192 168 55 2 time clmz Reply from 192 168 55 2 time lt 1lms Reply from 192 168 55 2 time clmz Reply from 192 168 55 2 time clmz Reply from 192 168 55 2 time lt lms Reply from 192 168 55 2 rtime lmza Reply from 192 168 55 2 time lmz Y gt Reset Port If the behavior of the port is abnormal try to reset the port to make it normal Entity and iSCSI Settings The Entity and iSCSI Settings tab is used to view the entity name of the system and setup iSNS IP for the iSNS Internet Storage Name Service protocol It allows automated discovery management and configuration of iSCSI devices on a TCP IP network To use iSNS an iSNS server needs to be added to the SAN When this is done the iSNS server IP address must be added to the storage system for iSCSI initiator service to send queries to it Network Setup So EIER Oe E isCSl Nodes Active Sessions CHAP Accounts Entity Name and ISNS Configuration Information The entity name is for a device or gateway that is accessible from the network The iSNS protocol allows automated discover network Enter the required information below to use iSNS with this device Entity Name ign 1986 06 com d link dsn 6200 006912540 iSNS IP Address Apply To make changes enter the Entity Name and the iSNS IP Address and then click Apply Copyright 2 2014 D Link System Inc All Rights Reserved 55
21. 3 1 Migrating Good RAID5 Controller 1 Controller 1 Show disk size in 3 sl 1 Name Size GB Write Priority BgRate Type Clone Schedule Clone Status Health R RAID LUN SnapshotSpace GB Snapshot RAID Group sel voor 5 WB HI 4 RAID N A N A Migrating Optimal 0 RAID5 0 0 0 0 RO gt R5 1 Create Cloning Options Move RAID Level usage is the same as Migrate RAID Level except it cannot change the RAID level Extend Virtual Disks Extend function extends the size of the virtual disk if there is enough free space Take an example of extending the virtual disk 1 Select Volume Configuration gt Virtual Disks 2 Select a virtual disk and then click W gt Extend Copyright 2 2014 D Link System Inc All Rights Reserved 95 D Link a D Link Document User Manual 3 Change the virtual disk size The size must be larger than the current and then click the OK button to start extension Enter the size that you would like to extend this virtual disk to and press OK The size must be larger than the current size of the virtual disk Virtual Disk Size 10 GB Free Space 3720 GB OK Cancel 4 Extension starts If the virtual disk needs initialization it will display the status Initiating and the complete percentage of initialization in R96 DAY TIP The extension size must be larger than the current size of the virtual disk CAUTION The extension cannot
22. 30 50 and 60 this field indicates the number of subgroups in the RAID group For example 8 disks can be grouped into a RAID group of RAID 10 with 2 cells 4 cells In the 2 cell case PD 0 1 2 3 forms one RAID 1 subgroup and PD 4 5 6 7 forms another RAID 1 subgroup In the 4 cells the 4 subgroups are physical disk 0 1 physical disk 2 3 physical disk 4 5 and physical disk 6 7 WT Write Through cache write policy A caching technique in which the completion of a write request is not signaled until data is safely stored in non volatile media Each data is synchronized in both data cache and accessed physical disks WB Write Back cache write policy A caching technique in which the completion of a write request is signaled as soon as the data is in cache and actual writing to non volatile media occurs at a later time It speeds up system write performance but needs to bear the risk where data may be inconsistent between data cache and the physical disks in one short time interval RO Set the volume to be Read Only DS Dedicated Spare disks The spare disks are only used by one specific RAID group Others could not use these dedicated spare disks for any rebuilding purpose LS Local Spare disks The spare disks are only used by the RAID groups of the local enclosure Other enclosure could not use these local spare disks for any rebuilding purpose GS Global Spare disks It is shared for rebuilding purpose If some RAID
23. Configuration of RG lt name gt has been imported Configuration of RG lt name gt has been restored Configuration of VD lt name gt has been restored PD lt slot gt starts disk scrubbing process PD lt slot gt completed disk scrubbing process A large RG lt name gt with numbers disks included is created A RG lt name gt made up disks across lt number gt chassis is created The total size of RG lt name gt shrunk VD lt name gt finished erasing process The erasing process of VD lt name gt failed VD lt name gt starts erasing process RG lt name gt cannot be activated because of missing disks Read error at LBA lt address gt lt address gt of PD lt slot gt and rewrite failed at LBA lt address gt lt address gt of VD lt name gt Over I O retry limit in last 10 minutes on PD lt slot gt replacing the disk is highly recommended Over I O retry limit in last 10 minutes on PD lt slot gt the disk is disabled for automatic rebuilding with PD lt slot gt Description Failed to allocate snapshot memory for VD lt name gt Failed to allocate snapshot space for VD lt name gt The snapshot space threshold of VD lt name gt has been reached The snapshot VD lt name gt has been deleted The oldest snapshot VD lt name gt has been deleted to obtain extra snapshot space A snapshot on VD lt name gt has been taken Set the snapshot space of VD lt name gt to lt number gt MB 142 D Li
24. Gateway Enable Disable Jumbo Frames Ping Host Reset Port Entity Name iSNS IP Address Show information for lt Controller 1 Controller 2 gt Options Authentication Method Change Portal Rename Alias Users Show information for lt Controller 1 Controller 2 gt Connection Details Disconnect Create User Options Modify User Information Delete User Show disk for lt Local JBODn gt Show disk size in lt GB MB gt Disk Health Check Disk Check Report Options Set Free Disk Set Global Spare Set Local Spare Set Dedicated Spare Upgrade Disk Scrub Read Error Cleared Turn on off the Indication LED More information Show RAID size in lt GB MB gt Create 44 D Link Virtual Disks Snapshots Logical Units Replication Hardware Monitor Enclosure Management UPS SES SMART System information Event log System Maintenance Upgrade Firmware Synchronization This option is only visible when dual controllers are inserted Reset to Factory Default Configuration Backup Volume Restoration Copyright 2014 D Link System Inc All Rights Reserved D Link Document User Manual Options Migrate RAID Level Move RAID Level Activate Deactivate Verify Parity Delete Change Preferred Controller Change RAID Options Add RAID Set Add Policy More information RAID Set options Remove Move RAID Level List Disks
25. If you are an advanced user you can skip these steps Quick Installation Tool This tool guides you through the process of setting up basic array information configuring network settings and the creation of a volume on the storage system Please make sure that you have some free hard drives installed on the system SAS drivers are recommended IIIS cl RAID Groups Virtual Disks Snapshots Logical Units Replications Show disk for Local Show disk size in GB v Slot Size GB RAID Group RAID Set Virtual Disk Status Health Usage Vendor Serial Number Rate Write Cache Standby Read Ahead Command Queuing x1 3725 ri N A N A Online Good RAID WD WMC1F0086839 SAS 6 0Gb s Disabled Disabled Enabled Enabled aH 3725 ri N A N A Online Good RAID WD WMC1F0086838 SAS 6 0Gb s Disabled Disabled Enabled Enabled adi 3 3725 ri N A N A Online Good RAID WD WMC1F0108997 SAS 6 0Gb s Disabled Disabled Enabled Enabled amd 4 3725 ri N A N A Online Good RAID WD WMC1F0086703 SAS 6 0Gb s Disabled Disabled Enabled Enabled ui 5 3725 ri N A N A Online Good RAID WD WMC1F0088354 SAS 6 0Gb s Disabled Disabled Enabled Enabled ad 6 3725 ri N A N A Online Good RAID WD WMC1F0087264 SAS 6 0Gb s Disabled Disabled Enabled Enabled mS 7 3725 r1 N A N A Online Good RAID WD WMC1F0109198 SAS 6 0Gb s Disabled Disabled Enabled Enabled mS 3725 ri N A N A Online Good RAID WD WMC1F0086786 SAS 6 0Gb s Disabled Disabled Enabled Enabled D
26. LN NR REIR PT T9 PAG E UN c 70 73 75 Detach LUN m 70 73 75 ECUN EE 70 73 Ee ee 48 AWO 6 26 E 49 Change Admin Password 49 Change User Passwotd cccccccccccccceccceceeeceeeeeeeeeeeeeeseees 49 Es MP m emerer 49 LUN Logical Unit e TE 75 M MC S Multiple Connections per Session 104 122 MPIO Multi Path Input Output 104 122 MTU Maximum Transmission Un 54 N Newari LO eur uoce tou aci EUM LEM oe 47 DNS Server EE 48 Enable dual management porte 48 ES aTa e E A E A E E EE E SRI RUE 48 KE NOE e 48 DIV 10 H bs ens aE 48 INeDWOLK SEP ceci acc etcacace Oe 52 Disable Jumbo Frames eeeeeeesesseeeererrere 54 Enable Jumbo Frames o000nnnonnnnnnnnnnnnenenesnsesnssseeeeeeennee 54 ISCSI Bonding Settngs cccccccccccccceceeeeeeeeeeeeeeees 53 iSCSI IP Address Senge 54 Make Default Gateway eeeeeeeeeeeeeeeennnrrrnns 54 aere Ta EE 55 Remove Default Gateway eeeeeesseseeeeeeeeeeenes 54 EE 55 vim AP TD E 53 NTP Network Time Protocol ssssses 47 D PCP Priority Code Pott oerte rebns 54 Performance Montor 90 Physical Eegeregie 61 Disk Check Report 62 Disk Health C geegent eneen 62 IOS SC UM esto Op onan canna S Nadu nd MR AM OM ME 62 More Information ttn tab eter bes cres 62 Read Ertor C leare d E 62 oer Dedicated Spare 5
27. Link Document User Manual 1 Request Read 3 Return Data Memory Cache 4 Populate Cache 2 Read from HDD The following steps describe details about a host read with a cache miss 1 A host requests a read data 2 Read data from the HDD 3 Return requested data to the host 4 Populate the cache to SSD e Read Data with Cache Hit The following figure shows the steps of the controller which handles a host read request when the data is in the SSD cache 1 Read 3 Return Data Memory Cache 2 Read from SSD 4 Read from HDD SSD Failure Case Copyright 2014 D Link System Inc All Rights Reserved 133 D Link D Link Document User Manual The following steps describe details about a host read with a cache hit 1 A host requests a read data 2 Read data from the SSD 3 Return requested data to the host 4 If SSD has error read data from the HDD Write Data The following figure shows the steps of the controller which handles a host write request 1 Request Write 3 Return Status Memory Cache 4 Populate Cache 2 Write to HDD The following steps describe details about a host write 1 A host requests a write data 2 Write data to the HDD 9 Return the status to the host 4 Populate the cache to SSD I O Type The type of I O access is a user selectable SSD cache configuration The user selectable I O type controls the SSD cache internal settings for cache b
28. O To connect using advanced options select a target and then Conec click Connect To completely disconnect a target select the target and DEE then click Disconnect For target properties including configuration of sessions select the target and click Properties Properties For configuration of devices associated with a target select Devices the target and then click Devices More about basic iSCSI connections and targets OK Cancel Apply 3 Select the target name and then click the Done button 4 It can connect to an iSCSI disk now Copyright 2014 D Link System Inc All Rights Reserved 148 D Link a D Link Document User Manual Setup MPIO 1 If running MPIO please continue 2 Click Discovery tab to connect the second path 3 Click Discover Portal button Enter the IP address or DNS name of the target iSCSI Initiator Properties EN Discover Target Portal xi Targets Discovery Favorite Targets Volumes and Devices RADIUS Configuration Enter the T address or DNS name and port number of the portal you want to add Target portals To change the default settings of the discovery of the target portal click The system will look For Targets on Following portals Ree EEN Address Pot Adapter Ladies 192 168 21 1 3260 Default Default IP address or DNS name Port Default is 3260 192 168 22 2 sz60 Advanced Cancel
29. Source Target To do virtual disk clone transfers to Replication please follow the procedure below 1 Create a cloning job on an existing virtual disk with data stored already 2 It is better if there is no host connected to the source virtual disk Then run Set Clone Start Clone to synchronize the data between source and target virtual disks 3 After the data is synchronized change the cloning job to a Replication task Select the source virtual disk and then click W Change Replication Options 4 The Clone status of the source virtual disk will be changed from the name of the target virtual disk into Replication Copyright 2 2014 D Link System Inc All Rights Reserved 127 D Link a D Link Document User Manual Show disk size in GB 1 Name Size GB Write Priority Bg Rate Type Clone v SourceVD 10 WB HI 4 RAID QRep v TargetVD 10 WB HI 4 BACKUP N A CAUTION Changing a cloning job to a replication task is only available when the cloning job has been finished This change is irreversible 5 Deactivate the RAID group which the target virtual disk resides in and move all physical disks of the RAID group to the target system Then activate the RAID group in the target system Remember to set snapshot space for the target virtual disk and then attach the target virtual disk to a LUN ID 6 In Volume Configuration Replications tab at the source side click the Rebuild button to rebuild the replication ta
30. a D Link Document User Manual Populating the Cache The actions that read data from the HDD and write to the SSD are called populating the cache It is a background operation that typically immediately follows a host read or write operation The constraint is that two parameters are used to determine when to start a cache populate operation 1 Populate on read threshold The value is great than zero If it is zero no action is performed for read cache 2 Populate on write threshold It s the same action as read According to these values each cache block has associated to its read and write counts When a host requests the read data located on the cache block its read count is increment If a cache hit does not occur and the read count is greater than or equal to the populate on read threshold then a cache populate operation is performed with the host read concurrently If a cache hit occurs a populate operation is not performed If the read count is smaller than the threshold the count continues and a populate operation is not performed neither For write cases it s the same scenario as read We provide the figures to describe the following in more detail Read Write Cache Cases Read Data with Cache Miss The following figure shows the steps of the controller which handles a host read request when some of the data is not in the SSD cache Copyright 2014 D Link System Inc All Rights Reserved 132 D Link 4 D
31. a iSNS server this case would not happen DE P TIP LA ISNS server is recommended for dual controller system of iSCSI interfaces Copyright 2014 D Link System Inc All Rights Reserved 109 D Link Snapshots D Link Document User Manual Snapshot on the box captures the instant state of data in the target volume in a logical sense The underlying logic is Copy on Write moving out the data which would be written to a certain location where a write action occurs since the time of data capture The certain location named as Snapshot virtual disk is essentially a new virtual disk which can be attached to a LUN provisioned to a host as a disk like other ordinary virtual disks in the system In case of data loss e g virus attack data corruption human errors and so on rollback can restore the data back any previous captured state Snapshot virtual disk is allocated within the same RAID group in which the snapshot is taken we suggest to reserve 20 of the RAID group size or more for snapshot space Take a Snapshot Take an example of taking a snapshot d Before taking a snapshot the system must reserve some storage space for saving variant data There are two methods to set snapshot space In Virtual Disks tab selects a virtual disk and then click W Set Snapshot Space or in Snapshots tab click Set Snapshot Space button Set Snapshot Space Virtual Disk VD 01 n Available 3595GB Ii sB vj
32. and then click W gt Migrate RAID Level 3 Select a RAID Level from the drop down list Copyright 2014 D Link System Inc All Rights Reserved 94 D Link a D Link Document User Manual 4 Click the Select Disks button to select disks from either local or expansion JBOD systems and click OK to complete the selection The selected disks are displayed at Disks Used Migrate RAID Level RAID Name RO gt R5 RAID Level RAID 5 Disks Used Local 12 3 5 In the confirmation dialog click the OK button to execute migration 6 Migration starts and the status of Physical Disks RAID Groups and Virtual Disks are changing The complete percentage of migration is displayed in R96 Show disk for Local v Show disk size in sl Slot Size GB RAID Group RAID Set Status Health Usage Vendor Serial Number Rate Write Cache Standby Read Ahead Command Queuing Ee 1 1862 RO gt R5 N A Transitioning Good RAID WDC WD WCAVY4158095 SATA 6 0Gb s Disabled Disabled Enabled Enabled Sa 2 1862 RO gt R5 N A Transitioning Good RAID WDC WD WCAVY3924333 SATA 6 0Gb s Disabled Disabled Enabled Enabled Ea 3 1862 R0 gt R5 N A Online Good RAID WDC WD WCAVY4118479 SATA 6 0Gb s Disabled Disabled Enabled Enabled Name Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Number of Virtual Disk Status Health RAID Current Controller Preferred Controller v R0 gt R5 3725 3625 3625 Disabled
33. backed data finished Battery backup module is detected Battery backup module is good Battery backup module is charging Battery backup module is failed Battery backup feature is lt string gt Battery backup module is inserted Battery backup module is removed Description JBOD lt name gt PD lt string gt starts upgrading firmware process JBOD lt name gt PD lt string gt finished upgrading firmware process JBOD lt name gt PD lt string gt upgrade firmware failed JBOD lt name gt PD lt slot gt has been freed from RG lt name gt JBOD lt name gt disk lt slot gt is inserted into system JBOD lt name gt disk lt slot gt is removed from system JBOD lt name gt disk lt slot gt read block error JBOD lt name gt disk lt slot gt write block error JBOD lt name gt disk lt slot gt is disabled JBOD lt name gt disk lt slot gt gets no response JBOD name is inserted into system JBOD lt name gt is removed from system JBOD lt name gt disk lt slot gt S M A R T Threshold Exceed Condition occurred for attribute lt string gt 143 D Link WARNING INFO WARNING WARNING INFO INFO ERROR ERROR DEBUG WARNING INFO INFO WARNING INFO WARNING INFO WARNING WARNING WARNING WARNING INFO WARNING WARNING WARNING WARNING INFO INFO INFO INFO INFO INFO JBOD SMART fail JBOD CTR inserted JBOD CTR iremoved JBOD degraded PD dedicated spare PD glo
34. be executed during rebuilding or migration Thin Provisioning Thin provisioning is a hot topic in the IT management and storage industry When we think of thin provisioning it naturally brings to our minds the opposite term fat provisioning which is the traditional way IT administrators allocate storage space Each logical volume is used by an application or a group of users When it comes to the point to decide how much space a logical volume requires for three years or for the lifetime of an application it s really hard to make the prediction correctly and precisely To avoid the complexity of adding more space to the volumes frequently IT administrators end up allocating more storage space to each logical volume than it needs in the beginning This is why it s called fat provisioning Usually it turns out that a lot of free space is sitting around idle This stranded capacity is wasted which equals to waste of investment and inefficiency Various studies indicate that as much as 75 of the storage capacity in small and medium enterprises or large data centers is allocated but unused This wasted storage Capacity is where thin provisioning becomes useful Copyright 2014 D Link System Inc All Rights Reserved 96 D Link 4 D Link Document User Manual E Actual Volume Physical Available space Volume P Whole System Traditional Fat Provisioning Thin provisioning sometimes is known as just in time capacity or
35. deleted and then click the OK button 3 The multi path s are deleted MC S To setup MC S Multiple Connections per Session of the replication task path please follow the procedure below 1 Select the task path in Replications tab and then click W Add Connection Copyright 2 2014 D Link System Inc All Rights Reserved 122 D Link a D Link Document User Manual Source Port LAN1 v Target IP 10 0 0 2 OK Cancel 2 Select the Source Port and input the Target IP and then click OK button 3 The connection is added To delete multi connections per session of the replication task path please follow the procedure below 1 Select the task path in the Replications tab and then click W gt Delete Connection 2 Select the connection s that you want to be deleted and then click OK button 3 The multi connection s are deleted Task Shaping If the replication traffic is affecting the normal usage the method below will help to limit it There are eight shaping groups which can be set In each shaping group we also provide peak and off peak time slots for different bandwidths The following is an example for setting a shaping group 1 In Replications tab click the Shaping Setting Configuration button Copyright 2 2014 D Link System Inc All Rights Reserved 123 D Link 4 D Link Document User Manual Replication Shaping Setting Configuration Shaping Group Shaping Groupi Peak 1
36. e g 192 168 1 234 255 255 255 0 The remote control settings are on the following Host IP lt P Address gt e g 192 168 0 32 User Name admin Password 123456 Copyright 2014 D Link System Inc All Rights Reserved 29 D Link a D Link Document User Manual TIP is e La D Link systems support SSH for remote access only When using SSH the IP address and password are required for login LCD After booting up the system the following screen shows management port IP and model name For example 192 168 008 174 D Link DSN 6500 To access the LCD options use the ENT Enter button ESC Escape button 4 up and down to scroll through the functions This table describes the function of each item Function Description System Info Display system information including firmware version and amount of RAM Alarm Mute Mutes an alarm after an error occurs Reset Shutdown Reset or shutdown the system Quick Install Provide quick steps to create a volume Volume Wizard Provide smart steps to create a volume View IP Setting Display current IP address subnet mask and gateway Change IP config Set IP address subnet mask and gateway There are 2 options DHCP Get IP address from DHCP server or static IP Enc Management Shows the enclosure data for physical disk temperatures fan status and power supply status Reset to Default Reset the system to default settings The default resets include
37. fails or has been removed then the status of RAID group will be changed to degraded mode At the same time the system will search the spare disk to volume rebuild the degraded RAID group into a complete one There are three types of spare disks which can be set in Physical Disks Dedicated Spare The hard drive has been set as a dedicated spare of a RAID group Local Spare The hard drive has been set as a local spare of the enclosure Global Spare The hard drive has been set as a global spare of the whole system The detection sequence first checks for a dedicated spare disk then local spare disk and finally global spare disk The following examples are scenarios for a RAID 6 1 When there is no global spare disk or dedicated spare disk in the system the RAID group will be in degraded mode and wait until there is one disk assigned as a spare disk or the failed disk is removed and replaced with a new clean disk before starting Auto Rebuild 2 When there are spare disks for the degraded array system starts Auto Rebuild immediately In RAID 6 if there is another disk failure occurs during rebuilding system will start the above Auto Rebuild process as well Auto Rebuild feature only works while the status of the RAID group is Online Thus it will not conflict with the online roaming feature 3 In degraded mode the health of the RAID group is Degraded When rebuilding the status of the RAID group and virtual disk will dis
38. ied uident tutus ik uses 62 e EE 62 DeL opal E 62 bet Local Spare eege 62 Turn on off the Indication LED 62 Bloc ame 62 Q Replication Options Restart the task an hour later if it failed 126 Snapshot Space eege 126 Copyright 2014 D Link System Inc All Rights Reserved D Link Document User Manual Threshold ME 126 ee E 76 119 Add CO COTON ege 78 122 EVO GR adr EO T 78 122 Change Replication Option 126 asc ee TT 119 IBS REPERI 78 126 Delete te 78 122 IJElett e EE 122 Replication Options ueeeeeeeeeeeeeeeeeeeeeeel 77 125 R ol e dul Ea E E EE 78 124 Set Task Shapin 9s sccsscasesdessrdsadecscecuseadassateatavecteatsacs 78 123 Shaping Setting Configuration cceeeeeees 77 123 vici MR 77 122 SE E 78 122 ER M ECC S 96 Space REC AMMAN ON mme 70 Quick Installatton 35 R RAID CONCOPIS IEEE ei RAID Group Policy IR 66 e 1a ERROR RR rA 66 RATOU e stecae 63 EE 64 Add EE 65 Add RAID DEl oier E EN 65 Change Preferred Controller 64 Change RAID Optpons 64 EE 64 TEEN 64 brc 64 Migrat RAID Level cscri tante bot 64 93 More Information seserian anann 65 Move RAID Level 64 93 Eeer 64 led PENIS RETE 18 RAID Set MEAS GMOS d Rt TU ERR T 66 Move RAID Level 66 EE 66 Reboot and Shutdovwmn aaan oi 80 ICD di Ou uscedeseee stein nemet A a 76 119 Reset to Fac
39. lt name gt was aborted The clone of VD name has been designated The clone of VD name is no longer designated Auto clone task string Auto clone task Snapshot name is not found for VD name Description Replication portal is enabled Replication portal is disabled VD lt name gt starts replication process VD name finished replication process The replication in VD lt name gt failed The replication in VD lt name gt was aborted VD lt name gt has been configured as a replication VD lt name gt has been configured as a RAID volume 146 D Link INFO INFO WARNING WARNING WARNING INFO INFO INFO INFO VD replication set VD replication reset Auto rep not enable Auto rep error Auto rep no snap Source replicate started Source replicate finished Source replicate failed Source replicate aborted Thin Provisioning Events D Link Document User Manual The replication of VD lt name gt has been designated The replication of VD lt name gt is no longer designated Auto Replica task Replication is not enabled for VD lt name gt Auto Replication task lt string gt Auto Replication task Snapshot lt name gt is not found for VD lt name gt Remote VD lt name gt starts replicating to VD lt name gt Remote VD lt name gt finished replication to VD lt name gt Remote VD lt name gt failed replication to VD lt name gt Remote VD lt nam
40. new volume below and click Finish RAID Level RAID 0 RAID Group Name QUICK12169 Volume Size GB 5586 The volume is created and named by the system automatically It is available to use now Copyright 2014 D Link System Inc All Rights Reserved 43 D Link Basic Configuration a D Link Document User Manual Interface Hierarchy This table describes the hierarchy of the web GUI Menu Bar L1 System Configuration System Settings Network Settings Login Settings Email Notification Settings Log and Alert Settings iSCSI Configuration This option is Network Setup only visible when the controller has Entity and iSNS iSCSI ports Settings iSCSI Node Host Configuration This option is only visible when the controller has multiple interfaces Active Sessions CHAP Accounts Volume Configuration Physical Disks RAID Groups Copyright 2014 D Link System Inc All Rights Reserved L2 Button or Menu System Name Date and Time System Indication MAC Address IP Address DNS Server Address Service Ports Login Options Admin Password User Password Email Settings Send Test Mail SNMP Trap Settings Windows Messenger Syslog Server Settings Admin Interface and Front Display Alerts Device Buzzer Show information for lt Controller 1 Controller 2 gt Options iSCSI Bonding Settings Delete iSCSI Bonding Set VLAN ID iSCSI IP Address Settings Make Default
41. off 3 Shutdown using Power button The power button is located by the right front handle Forced shutdown press and hold for more than 4 seconds The power will be cut off immediately Graceful shutdown press once to initialize graceful shutdown Press a second time within 4 seconds to confirm and start graceful shutdown If there is no 2nd press within 4 seconds disable graceful shutdown and return to normal operating mode Copyright 2014 D Link System Inc All Rights Reserved 28 D Link 4 D Link Document User Manual Quick Setup Management Interfaces There are several management methods to manage the storage system described on the following pages Serial Console Use console cable NULL modem cable to connect the console port of the storage system to RS 232 port of the management PC The console settings are on the following Baud rate 115200 8 data bit no parity 1 stop bit and no flow control Terminal Type vt100 The initial defaults for administrator login are User Name admin Password 123456 Secure Shell Remote Access SSH secure shell software is required for remote login The SSH client software is available on the following web sites SSH Tectia Client http www ssh com e PuTTY http www chiark greenend org uk The default management IP address is 192 168 0 32 255 255 255 0 please configure your computer IP address at the same subnet of the system
42. on the available disks or you can select the number of disks that you would like to include Note The maximum number of disks in a RAID group is 64 Maximize the size of the RAID group Select the number of disks to use New 1 Disk 1862 GB New 2 Disk 3725 GB New 3 Disk 5588 GB 4 Enter the Volume Size GB desired that is less than or equal to the default available size shown Then click Next button Copyright 2 2014 D Link System Inc All Rights Reserved 41 D Link 4 D Link Document User Manual Volume Creation Wizard Step 3 Enter the size you would like the volume to be on your new RAID The maximum size is the size of your RAID group 5588 Volume 5ize GB 5588 5 Use LBA 64 support It depends on the operation system Message from webpage Use LBA 64 support Choose OK if using operating system such as a 64bit version of Windows Windows Server 2003 SP 1 or later Linux with at least a 2 6 x kernel or FreeBSD 5 2 1 or later If you choose Cancel then the sector size will change to 4K and the maximum capacity will be limited to 16 TB The volume can also not be used as a dynamic disk x cm 6 Finally verify the selections and click Finish button if they are correct Copyright 2014 D Link System Inc All Rights Reserved 42 D Link 4 D Link Document User Manual Volume Creation Wizard Confirm Please confirm the settings for your
43. p SZ S EE D E S 20000 soo amp 9 20000 S 20000 2 8 e 10000 250 E 10000 10000 D e Throughput 22636KB lE Latency 38 ms Slot 7 Slot 9 40000 40000 30000 25000 5 5 5 20000 a a 2 S 2 20000 2 20000 2 15000 E E E 10000 MJ 10000 10000 5000 D 0 0 EM Throughput 20463K8 Latency 33 ms EM Throughput 20293KB E Latency 28 ms Slot 10 Slot 11 Slot 12 40000 30000 25000 30000 42 a B 20000 E 2 20000 3 15000 ud 10000 5000 0 1 Di me D en EM Throughput 4784KB E Latency 18 ms E Throughput 4800 KB ES Latency 19 ms EI er 4512 KB E Latency 17 ms iSCSI The iSCSI displays TX Transmission and RX Reception of the iSCSI ports Check the interfaces that you want to monitor Copyright 2014 D Link System Inc All Rights Reserved 90 D Link a D Link Document User Manual Controller1 L LAN1 MLAN2 Clan MiLAN4 Controller2 LAN1 M LAN2 CILAN3 V LANA d Controller1 LAN2 Controlleri LANA 1000 0 Dr 40004Mbps E RX 33171 Mbps E Tx 41432Mbps E RX 505 55 Mbps Controller2 LAN2 Controller2 LAN4 8 S B O E TX 405 34 Mbps EM RX 395 75 Mbps E Tx 635 01 Mbps EM RX 63372 Mbps Copyright 2014 D Link System Inc All Rights Reserved 91 D Link a D Link Document User Manual Advanced Operations Volume Rebuild If one physical disk of the RAID group which is set as protected RAID level e g RAID 5 or RAID 6
44. preferred owner the default owner is controller 1 To change the ownership of the RAID group please follow the procedure below 1 In Volume Configuration gt RAID Group tab selects a RAID group And then click V Change Preferred Controller Show RAID size in ls Name Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Number of Virtual Disk Status Health RAID Current Controller Preferred Controller Disabled RAID 5 Controller 1 Controller 1 Deactivate Verify Parity Delete Change Preferred Controller Change RAID Options More Information 2 Click OK to apply The ownership of the RG will be switched to the other controller Controller Status There are four statuses for dual controller They are displayed in the Status column in System Maintenance System Information 1 Normal Dual controller mode Both of the controllers are functional 2 Degraded Dual controller mode When one controller fails or has been un plugged the system will turn to Degraded In this stage UO will write through the protected data and the Copyright 2 2014 D Link System Inc All Rights Reserved 108 D Link a D Link Document User Manual ownership of RAID group will switch to the working controller For example if controller 1 which owns the RAID group 1 fails accidently the ownership of RAID group 1 will be switched to controller 2 automatically The system and data can the
45. some drives are still available free status This phenomenon is the result of using smart design For example a user chooses the RAID 5 level and the system has 12 200GB 4 80GB free drives inserted Generally if using all 16 drives for a RAID 5 group the maximum size of volume is 16 1 80GB 1200GB This wizard provides a smarter check and searches the most efficient way of using free drives It uses 200GB drives only to provide 12 1 200GB 2200GB capacity as a result the volume size is larger using less drives 1 Click Volume Creation Wizard from the menu bar 2 Choose a RAID Level The number in the brackets is the maximum capacity at the RAID level Copyright 2014 D Link System Inc All Rights Reserved 40 D Link Ze D Link Document User Manual Volume Creation Wizard Step 1 The dropdown list below contains the levels and the amount of storage that will be available using that RAID method Please select the option that best suits your storage needs Enclosure RAID Level RAID 0 5588 GB RAID 1 1862 GB RAID 3 3725 GB RAID 5 3725 GB 3 Select the default option Maximize the size of the RAID group or manual option Select the number of disks to use From the drop down list select either the RAID Group capacity combination desired Click Next button to proceed Volume Creation Wizard Step 2 You can either have the enclosure automatically maximize the size of your RAID group based
46. target and aggregate the duplicate devices into a single device Each session can be established using different NICs network infrastructure and target ports If one session fails then another session can continue processing I O without interruption to the application MPIO Multiple sessions between initiator and target i i i i i SCSblayer SCSlilayer i I i i i iSCSI layer iSCSllayer i i i i aes i i i I i pr i d i I n i MC S MC S Multiple Connections per Session is a feature of iSCSI protocol which allows combining several connections inside a single session for performance and failover purposes In this way I O can be sent on any TCP IP connection to the target If one connection fails another connection can continue processing I O without interruption to the application Copyright 2014 D Link System Inc All Rights Reserved 104 D Link a D Link Document User Manual Mc s Multiple Connections per Session SCSIllayer SGCSIllayer iSCSI layer ISCSI layer i i iSCSI ESCH iSCSI iSCSI iSCSI layar layar layer layar layar US SCH TCP IP TCPAP TCP IP TCPAE Difference MC S is implemented on iSCSI level while MPIO is implemented on the higher level Hence all MPIO infrastructures are shared among all SCSI transports SAS etc MPIO is the most common usage across all OS vendors The primary difference between these two is the deg
47. 0 WB H Figure 3 Source Side Figure 4 Target Side 5 In the Replications tab of the source side click Create 6 Select a target virtual disk and then click the Next button 1 Name Size GB Status RAID LUN e Snapshot RAID Group SourceVD 10 Online RAID5 1 0 R5 1 Next gt gt Cancel 7 Select the Source Port and input the Target IP and then click the Next button Copyright 2014 D Link System Inc All Rights Reserved 120 D Link a D Link Document User Manual Source Port LAN1 v Target IP 10 0 0 7 lt lt Back Next gt Cancal 8 Choose Authentication Method and input the CHAP user if needed Select a Target Node and then click the Next button Chore Authaenik ation Method No uthenticelssn Met hed Max 223 Hin 12 Max 16 Select a Target Node Ra h ss d Select a Target LUN When a replication job is complete it will take a snapshot of its target virtual disk Please make sure the snapshot space of the backup virtual disk on the target side is properly configured Finally click the Finish button 10 The replication task is created 11 At this time if the source virtual disk has no snapshot space it will be allocated snapshot space for replication usage automatically The size will depend on the parameters set in Replication Options Copyright 2014 D Link System Inc All Rights Reserved 121 D Link 4 D Link Document User Manual Start and Stop Repli
48. 00MB Off peak N A Peak 100 MB Enable Off Peak M LAE ee EE Sun ZIEJEJEIEICIEICIEIDIEICIEIEIEIEICIEIE ro 9 2 RIES Oo 9 joe sje EES RIES EE EE ee ee Mei RlIglggiglgglgleglglgglgoglg gOglggiglegsg meje eje eje je ej c o oo e o fe EE EIS wa ole e m eewae ewee o5Doos DB50JBOOjee 9 sat ole je e v lel ale e e v ev v v v v v v 2 Select a Shaping Group to setup 3 Input the bandwidth MB at the Peak time 4 If needed check Enable Off Peak and then input the bandwidth MB at Off Peak time and define the off peak hour 5 Click OK button 6 In Replications tab select the task and then click W Set Task Shaping Replication Set Task Shaping Shaping Shaping Groupi 10MB Shaping Group 100MB Shaping Group3 100MB Shaping Group4 100MB Shaping Groups 100MB Shaping Groupe 100MB Shaping Group 100MB Shaping Group8 100MB DK Cancel 7 Select a Shaping Group from the drop down list and then click the OK button 8 The shaping group is applied to the replication task Schedule Replication Task The replication task can be set by an hourly or daily schedule Please follow the procedure below 1 In the Replications tab select the task and then click W Schedule Copyright 0 2014 D Link System Inc All Rights Reserved 124 D Link D Link Document User Manual 2 Check the schedules that you want They can be set by month
49. 192 168 10 21 3260 v 9 None ign 1986 06 com d link dsn 6500 0069192a40 dev9 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 10 None Ion 1986 06 com d link dsn 6500 006919a40 dev10 ctr 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 v 11 None Ion 1986 06 com d ink dsn 6500 006919a40 dev11 ctr 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 1 2 3 4 5 6 next gt last The options available on this tab are W gt Authentication Method CHAP Challenge Handshake Authentication Protocol is a strong authentication method used for user login It s a type of authentication in which the authentication server sends the client a key to be used for encrypting the username and password CHAP enables the username and password to transmit in an encrypted form for protection To use CHAP authentication please follow the procedures TIP A CHAP account must be added before you can use this authentication method Please refer to CHAP Accounts section to create an account if none exists o Select one of the nodes from one controller o Check W Authentication Method o Select CHAP from the drop down list Copyright 2014 D Link System Inc All Rights Reserved 56 D Link a D Link Document User Manual Authentication Method Choose Authentication Method Select the authentication method that you would like to use for this node Authentication Method None CHAP o Click the OK button
50. 4 D Link a D Link Document User Manual Attach LUN Attach a logical unit number LUN to a virtual disk Virtual Disk SnapVD 01 30 GB Allowed Hosts S Add Host Target 0 LUN LUN 1 Permission Read only Read write OK Cancel 12 Done The Snapshot can be used NY TIP La For DSN 6200 6500 Series the maximum snapshot number per virtual disk is 64 Logical Units The Logical Units tab is provided to attach detach or view the status of logical unit numbers for each virtual disk Allowed Hosts Target LUN Permission Virtual Disk Number of Session el Y iqn 1991 05 com microsoft 0 Attach LUN This table shows the column descriptions Column Name Description Allowed Hosts iSCSI node name for access control or a wildcard for access by all hosts Target The number of the target LUN The number of the LUN assigned Permission The permission level Read write Read only Virtual Disk The name of the virtual disk assigned to this LUN Number of The number of the active connection linked to the logical unit Session This option is only visible when Copyright 2014 D Link System Inc All Rights Reserved 75 D Link a D Link Document User Manual the controller has iSCSI ports The options available on this tab are Attach LUN Attach a logical unit number to the virtual disk The options available after attaching LUN are S WV gt Detach LUNs Deta
51. 50 The system will check the snapshot space every hour When the used snapshot space is over 50 the system will start the clone job automatically And then continue monitoring the snapshot space When the rest of the snapshot space reaches 50 in other words the total snapshot space that has been used reaches 75 the system will start the clone job again Restart the task an hour later if failed The setting will be effective after enabling schedule clone When running out of the snapshot space the virtual disk clone process will be stopped because there is no more available snapshot space If this option is checked the system will clear the clone snapshots in order to release snapshot space automatically and the clone task will be restarted after an hour This task will start a full copy To clear the clone job please follow the procedures Select the source virtual disk and then click W gt Clear Clone Click OK button to clear clone job Clone Constraint While the clone is processing manually the increment data of the virtual disk is over the snapshot space The clone will complete the task but the clone snapshot will fail The next time when trying to start clone you will get a warning message There is not enough snapshot space for the operation The user needs to clean up the snapshot space in order to operate the clone process Each time the clone snapshot failed it means that the system loses the reference value o
52. AID group is being migrated Scrubbing the RAID group is being scrubbed Health The health of the RAID group Good the RAID group s health is good Failed the RAID group has failed Degraded the RAID group is not healthy and not completed The reason for this could be lack of disk s or a disk has failed The options available on this tab are YV gt Remove Remove the selected RAID set WV gt Move RAID Level Move the member disks of the RAID set to other physical disks V gt List Disks Display all disks This table shows the column descriptions of RAID Group Policy Column Name Description No The number of the RAID group policy Threshold The threshold of the thin provision RAID group Level Define the event log level when the thin provision RAID group usage reaches the threshold Action Take action when the thin provision RAID group usage reaches the threshold Take no Action Reclaim Space Delete Snapshots De activate RAID Group The options available on this tab are W gt Delete Delete the selected policy Y gt Modify Modify the level and the action of the policy Take an example of creating a RAID group d Click the Create button Copyright 2014 D Link System Inc All Rights Reserved 66 D Link a D Link Document User Manual Create a RAID Group RAID Name R5 RAID Level RAID 5 i RAID Disks Local 123 Select Disks Preferred Controller Auto Th
53. ATA 1 5Gb s SATA 6Gb s SATA 1 5Gb s Without MUX Board 3TB 2794 GB SAS SAS 6Gb s SAS 6Gb s SAS 3Gb s SAS 3Gb s Rear View The following example shows the DSN 6220 chassis This table describes the rear modules Number Description 1 Controller 1 CTRL 1 Controller 2 CTRL 2 only for dual controller Fan Module FAN1 FAN2 Fan Module FAN3 FAN4 Power Supply Unit PSU1 Power Supply Unit PSU2 2 3 4 5 6 This table describes the rear components Copyright 2 2014 D Link System Inc All Rights Reserved 15 D Link a D Link Document User Manual Number Description 1 SAN ports DSN 6200 6 x GbE iSCSI ports DSN 6500 2 x 10GbE iSCSI ports SFP 2 x GbE iSCSI ports 2 LEDs from right to left Controller health LED Green Controller status normal Red System booting or controller failure Master slave LED only for dual controllers Green This is the Master controller Off This is the Slave controller Dirty cache LED Orange Data on the cache waiting to flash to disks Off No data on the cache BBM LED when status button pressed Green BBM installed and powered Off No BBM installed 3 BBM status button used to check the battery when the power is off If the BBM LED shows Green then the BBM still has power to keep data on the cache If the BBM LED stays Off then the BBM power has run out and it cannot provide power for the cache anymor
54. Alert Levels To Sendi LJ Information M warning Error To Email Address 2 Alert Levels To Send information W warning Error To Email Address 3 Alert Levels To Send3 LJ Information M warning Error specify a SMTP Server Send Test Email Apply When it is done click the Apply button Log and Alert Settings The Log and Alert Settings tab is used to setup SNMP traps for alerting via SNMP pop up messages via Windows messenger not MSN or Skype alerts via the syslog protocol the pop up alerts and alerts on the front display The device buzzer is also managed here Copyright 2 2014 D Link System Inc All Rights Reserved 50 D Link a D Link Document User Manual SNMP Trap Settings Host Address 1 Host Address 2 Host Address 3 Community public SNMP MIB File Download Download Alert Levels To Send Information W Warning Error Windows Messenger Host Address 1 Host Address 2 Host Address 3 Alert Levels To Send LJ Information lvl Warning I Error Syslog Server Settings Host Address or Name UDP Port 314 Facility User Alert Levels To Log LJ Information W warning W Error Admin Interface Popup Alerts LJ Information warning LJ Error Alerts to Show on Front Display Information lvl Warning lw Error The options available on this tab are SNMP Trap Settings It allows up to three SNMP trap addresses The default community setting
55. Bor cc 84 138 o 84 MYO nie EE 84 Copyright 2014 D Link System Inc All Rights Reserved KEN ec aaa ee ee eee eee 84 F basi UE 129 CCODIHe UEADTOTL eege eegene vis eet anle tian egegeg 130 EE 130 vie INTO HTC Nro 129 Firmware Synchronization eese 86 GUI Graphic User Interface 32 H Hardware MODIL OE tacente eines eimi ebeg 78 PLO S UO EE 79 Host Port Configuration seggt gege 52 Indicators and ICONS iecit Eater e Pert e bres 34 MS Co PT P 90 ISC SE CInternel S6 SD ausa tered tepore tea pene pt tube d 19 IS CS COMCEIUS M m 19 hee eege 52 iSCSI Initator EE 148 IJISCOBBC 6 oe ane ae mr ee On 150 BI oe E 149 KIPI m 149 e O a 148 ec IN a elise cece net EEE EE EE E TE 56 Authentication Method 56 C hapnse EE 57 Rename ANAS E 58 ISNS Internet Storage Name Service 95 JBOD RE E 102 Connect IIS OD seca insetti mor tete rei tee e db ires 102 Upgrade EIGIWEEG cette te oet tiu Ses hes tree rtis 103 Jumbo Frae gedet e 54 L LACP Link Aggregation Control Protocol 53 106 LCM LCD Control Module esse 30 Log and Alert Settings 153 D Link Device Buzzer 52 Lopaud Alert EE 50 Admin Interface and Front Display Alerts 52 SNMP Trap Settings eeeeeeeseseeeeeeeeeeeeens 51 System Server er 51 Windows ENEE 51 Ee M
56. D Link iSCSI Nodes a D Link Document User Manual The iSCSI Nodes tab is used to view the target name for iSCSI initiator The two controllers support multiple nodes listed below DSN 6200 Series support up to 64 multiple nodes per controller DSN 6500 Series support up to 64 multiple nodes per controller Show information for Controller 1 v 1 2 3 4 5 86 next gt last ID Auth Node Name Portal Alias v 0 None iqn 1986 06 com d link dsn 6500 006919a40 dev0 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 om 1 None iqn 1986 06 com d link dsn 6500 006919a40 dev 1 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 v 2 None iqn 1986 06 com d link dsn 6500 006919240 dev2 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 Wa 3 None ign 1986 06 com d link dsn 6500 006919a40 dev3 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 v E None Ion 1986 06 com d link dsn 6500 006919240 dev4 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 ke 5 None iqn 1986 06 com d link dsn 6500 0069192a40 dev5 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 v 6 None ign 1986 06 com d link dsn 6500 006919a40 dev6 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 v 7 None ign 1986 06 com d link dsn 6500 0069192a40 dev7 ctr1 0 0 0 0 3260 192 168 10 20 3260 192 168 10 21 3260 ula 8 None ign 1986 06 com d link dsn 6500 0069192a40 dev8 ctr1 0 0 0 0 3260 192 168 10 20 3260
57. D Link a D Link Document User Manual D Link Document User Manual DSN 6200 6500 Series Version 1 00 December 2014 Copyright 0 2014 D Link System Inc All Rights Reserved 1 D Link a D Link Document User Manual Copyright Copyright 2014 D Link Corporation Inc All rights reserved Trademarks All products and trade names used in this manual are trademarks or registered trademarks of their respective companies Default login information Management IP Address 192 168 0 32 User name admin Password 123456 Copyright 2014 D Link System Inc All Rights Reserved 2 D Link D Link Document User Manual Preface About This Manual This manual introduces the D Link storage system and it aims to help users know the operations of the disk array system easily Information contained in this manual has been reviewed for accuracy but not for product warranty because of the various environments OS settings Information and specification will be changed without further notice Before reading this manual it assumes that you are familiar with computer skills such as hardware storage concepts and network technology It also assumes you have basic knowledge of Redundant Array of Independent Disks RAID Storage Area Network SAN Internet SCSI iSCSI Serial attached SCSI SAS Serial ATA SATA technology CAUTION Do not attempt to service change disassemble or upgrade the equipment s compo
58. ER a C 2 JBOD BBM Net cable el FC iSCSI SAS ege UPS RS 232 cable SAS cable Cable To Next JBOD To Next JBOD Dual controller topology For better data service availability all the connections among hosts switches and the dual controllers are recommended to be redundant as shown below Copyright 2014 D Link System Inc All Rights Reserved 25 D Link D Link Document User Manual Console and UPS topology Connect the console cable and UPS per the following Management RS 232 cable for UPS phone jack to DB9 male APC Smart UPS Optional R5 232 cable for console phone jack to DB9 female RS 232 cable for UPS phone jack to DB9 male APC Smart UPS serial cable DB9 female to N A controller OO Console UPS o Using RS 232 cable for console back color phone jack to DB9 female to connect from controller to management PC directly o Using RS 232 cable for UPS gray color phone jack to DB9 male to connect from controller to APC Smart UPS serial cable DB9 female side and then connect the serial cable to APC Smart UPS CAUTION It may not work when connecting the RS 232 cable for UPS gray color phone jack to DB9 male to APC Smart UPS directly Copyright 2014 D Link System Inc All Rights Reserved 26 D Link a D Link Document User Manual o Attach the power cords and power on the system and then power on the hosts and the iSNS se
59. ERROR ERROR ERROR ERROR ERROR ERROR PD RPS finished F2L PD RPS finished F2F PD RPS failed L2F PD RPS failed F2L PD RPS failed F2F PD VD read write fault PD IO retry fault PD substitute L2F PD substitute F2L PD substitute F2F System Maintenance Events Level INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO WARNING ERROR INFO HAC Events Type System shutdown System reboot System console shutdown System web shutdown System button shutdown System LCM shutdown System console reboot System web reboot System LCM reboot FW upgrade start FW upgrade success FW upgrade failure IPC FW upgrade timeout Config imported a D Link Document User Manual JBOD lt name gt PD lt slot gt is replaced by PD lt slot gt JBOD lt name gt PD lt slot gt is replaced by JBOD lt name gt PD lt slot gt Failed to replace PD lt slot gt with JBOD 4d PD lt slot gt Failed to replace JBOD lt name gt PD lt slot gt with PD lt slot gt Failed to replace JBOD lt name gt PD lt slot gt with JBOD lt name gt PD lt slot gt Read error at LBA lt address gt lt address gt of JBOD lt name gt PD lt slot gt and rewrite failed at LBA lt address gt lt address gt of VD lt name gt Over I O retry limit in last 10 minutes on JBOD lt name gt PD lt slot gt replacing the disk is highly recommended Over I O retry limit in last 10 minutes on
60. Error Information Warning Information Information Information Information Information Information Information Information 1 2 3 4 5 6 7 8 9 10 next gt last Time Mon 17 Feb 2014 18 35 56 Mon 17 Feb 2014 18 35 56 Mon 17 Feb 2014 16 35 56 17 Feb 2014 18 35 56 17 Feb 2014 16 35 56 17 Feb 2014 18 35 42 17 Feb 2014 18 35 34 17 Feb 2014 18 35 34 17 Feb 2014 18 35 34 17 Feb 2014 18 35 34 17 Feb 2014 18 35 26 Mon 17 Feb 2014 18 35 26 Mon 17 Feb 2014 18 23 47 sat 15 Feb 2014 20 54 24 Fri 14 Feb 2014 15 42 28 Fri 14 Feb 2014 15 01 17 Thu 13 Feb 2014 11 46 00 Wed 12 Feb 2014 21 57 00 Wed 12 Feb 2014 21 42 25 Wed 12 Feb 2014 21 42 25 Content CTR1 Disk 1 has been freed from RAID group H CTR1 Virtual disk VD 02 has been deleted CTR 1 Virtual disk SnapVD 01 has been deleted CTR 1 Virtual disk VD 01 has been deleted CTR1 RAID group R5 has been deleted CTR1 LUN 1 is attached to virtual disk VD 01 CTR1 Disk 2 has been freed from RAID group H CTR1 Virtual disk VD 02 has failed CTR1 Virtual disk VD 01 has failed ICTR1 RAID group R5 has failed CTR1 Disk 3 has been freed from RAID group Hi CTR1 RAID group R5 is in degraded mode CTR1 admin login from 192 168 8 231 via web Ul CTR1 admin login from 92 242 203 131 via web Ul CTR1 admin login from 59 125 120 109 via web UI CTR1 admin login from 203 117 200 77 via web Ul CTR1 adm
61. Free This hard drive is free for use Dedicated Spare This hard drive has been set as a dedicated spare of a RAID group Local Spare This hard drive has been set as local spare of the enclosure Global Spare This hard drive has been set as global spare of whole system Vendor Hard drive vendor Copyright 2014 D Link System Inc All Rights Reserved 61 D Link a D Link Document User Manual Serial Number Hard drive serial number Rate Hard drive rate SAS 6 0Gb s SAS 3 0Gb s SATA 6 0Gb s SATA 3 0Gb s SATA 1 5Gb s SAS SSD 6 0Gb s SATA SSD 6 0Gb s Write Cache Hard drive write cache is enabled or disabled The default value is Enabled Standby HDD auto spin down to save power The default value is Disabled Read Ahead This feature ensures data is loaded to disk s buffer in advance for further use The default value is Enabled Command Newer SATA and most SCSI disks can queue multiple commands and Queuing handle each command individually The default value is Enabled The options available on this tab are Disk Health Check Check the health of the selected disks It cannot check the disks currently in use Disk Health Check Disk slot SelectPD Stop disk health check when the bad block lis v number is greater than OK Cancel Disk Check Report Download the disk check report It s available after executing Disk Health Check WV gt Set Free Disk Make t
62. I sessions and their connection information The DSN 6200 6500 Series supports up to 256 sessions per controller Copyright 2014 D Link System Inc All Rights Reserved 58 D Link 4 D Link Document User Manual Show information for Controller 1 v InitialR2T Immed Data MaxOutR2T MaxDataBurstLen DataSeqlnOrder DataPDUlnOrder No TSIH Initiator Name Target Name 262144 Ox0006 iscsiuser ign 1986 06 com d link dsn 6500 006919240 dev5 ctr1 Connection Details Disconnect This table shows the column descriptions Most of the options are standard parameters used in the negotiation between the initiator and the target when an iSCSI connection is created Column Name Description TSIH TSIH Target Session Identifying Handle is used for this active session Initiator Name It displays the host computer name Target Name It displays the controller name InitialR2T InitialR2T Initial Ready to Transfer is used to turn off either the use of a unidirectional R2T command or the output part of a bidirectional command The default value is Yes Immed data Immed data Immediate Data sets the support for immediate data between the initiator and the target Both must be set to the same setting The default value is Yes MaxDataOutR2T MaxDataOutR2T Maximum Data Outstanding Ready to Transfer determines the maximum number of Outstanding Ready to Transfer per task The default value is 1 MaxDataBurstL
63. Link a D Link Document User Manual NV OAT IG ESPON HEIDI NEE 88 Kee ANE SIU EC OVI DE 89 PERFORMANCE WIONITOR EE 90 KIC 90 KEE 90 Chapter 5 ADVANCED EREECHEN 92 VOLUME REBUM eege 92 MIGRATE AND MOVE RAID ET 93 ENO VIE TOAL DIOE E 95 TAN PROVE IONIN E 96 The Benefits of Thin Ree Te TE 97 EE E E a A E A E E E A T E ME IRR 98 ils PROVISIONING Re E 100 lie BR Fe ON SHAN EE 101 deuc 102 IBOLE XF ANION ee 102 COnN CIDE IE OD EE 102 Ere eea ST E IIS E E A A E E E E o AET 103 leie AD NIC EE 104 MP E 104 ACI 104 Biere 105 TRUNKING AND LAC EN 105 LCP E 106 EIERE 106 DUAL gel e 107 PT BOTE ut ME 107 OWNER SID TETTE A 108 Controller el TE 108 Change Controller Mode 109 Recommend Wen KE 109 SAP e E 110 Take es Ee CR e eee et eee ee ne ee ee en ee a eee ee 110 Cleanup Naps NOUS EE 111 Schedule SASS OES euis de ui ToU oeni III IDA IUNII IS IINE UU NM NIE EM M UNICI 112 ROND AG T 112 DAD SOO i ege erori E mm 113 Copyright 2014 D Link System Inc All Rights Reserved 7 Chapter 6 Chapter 7 a D Link Document User Manual Ber 115 EEN eege 115 Start and Stop le 116 eaaa HE ee 116 CONE OPIO ena a E O E EE E 117 Clear CION E 118 Bee TEE Ce EE 118 REPLICATION M T 119 Cregte eg T CEET 119 Start and Stop Replicatio
64. Minimum 4GB Free Capacity 3565GB Enter a Size which is reserved for the snapshot space and then click the OK button The minimum size suggested is 2096 of the virtual disk size Now there are two numbers in Snapshot Space GB column in Virtual Disks tab They mean used snapshot space and total snapshot space There are two methods to take snapshot In the Virtual Disks tab select a virtual disk and then click W Take a Snapshot or in Snapshots tab click Take a Snapshot button Enter a Snapshot Name and then click OK button The snapshot is taken Copyright 2 2014 D Link System Inc All Rights Reserved 110 D Link a D Link Document User Manual Show snapshots for virtual disk D 01 Show disk size in GB No Name Used GB Status Health Exposure Cache Mode LUN SnapVD 01 0 Mo WIA N A Schedule Snapshots Takea Snapshot Cleanup Snapshots Delete 5 Set quota to expose the snapshot Click W Set Quota option Set Quota Size 26 Available Space 26 GB 6 Enter the size reserved for the snapshot If the size is zero the exposed snapshot will be read only Otherwise the exposed snapshot can be read written and the size will be the maximum capacity for writing 7 Attach LUN to the snapshot Attach LUN Attach a logical unit number LUN to a virtual disk Virtual Disk SnapVD 01 30 GB Allowed Hosts Le Add Host Target 0 LUN LUN 1 Permission Read only
65. NG CTR reboot FW sync Type VD clone started VD clone finished VD clone failed VD clone aborted VD clone set VD clone reset Auto clone error Auto clone no snap Replication Events Level INFO INFO INFO INFO WARNING INFO INFO INFO Copyright 2014 D Link System Inc All Rights Reserved Type rep portal enabled rep portal disabled VD replicate started VD replicate finished VD replicate failed VD replicate aborted VD set as replication VD set as RAID a D Link Document User Manual Description The preferred owner of RG lt name gt has been changed to controller lt number gt Controller lt number gt forced to adopt write through mode on failover Controller lt number gt restored to previous caching mode on failback All volumes in controller lt number gt completed failover process All volumes in controller lt number gt completed failback process Controller number is inserted into system Controller number is removed from system Controller number gets no response Controller number is locked down Memory size mismatch Firmware version mismatch Low speed inter link is down High speed inter link is down SAS expander is down FC IO controller is down Controller reboot reason Firmware synchronization completed Description VD lt name gt starts cloning process VD name finished cloning process The cloning in VD name failed The cloning in VD
66. PD lt slot gt the disk is disabled for automatic rebuilding with JBOD lt name gt PD lt slot gt Over I O retry limit in last 10 minutes on JBOD lt name gt PD lt slot gt the disk is disabled for automatic rebuilding with PD lt slot gt Over I O retry limit in last 10 minutes on JBOD lt name gt PD lt slot gt the disk is disabled for automatic rebuilding with JBOD lt name gt PD lt slot gt Description System shutdown System reboot System shutdown from lt string gt via Console UI System shutdown from lt string gt via Web UI System shutdown via power button System shutdown via LCM System reboot from lt string gt via Console UI System reboot from lt string gt via Web UI System reboot via LCM System firmware upgrade starts System firmware upgrade succeeds System firmware upgrade is failed System firmware upgrade timeout on another controller lt string gt config imported Copyright 2014 D Link System Inc All Rights Reserved 145 D Link Level INFO INFO INFO INFO INFO INFO ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR INFO Clone Events Level INFO INFO WARNING INFO INFO INFO WARNING WARNING Type RG owner changed Force CTR write through Restore CTR cache mode Failover complete Failback complete CTR inserted CTR removed CTR timeout CTR lockdown CTR memory NG CTR firmware NG CTR lowspeed NG CTR highspeed NG CTR backend NG CTR frontend
67. RNING WARNING WARNING WARNING WARNING RMS Events Level INFO INFO INFO INFO INFO WARNING LVM Events Level INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO Voltage level 2 shutdown Voltage level 2 CTR shutdown UPS OK UPS fail UPS AC loss UPS power low SMART T E C SMART fail RedBoot failover Watchdog shutdown Watchdog reset Type Console Login Console Logout Web Login Web Logout Log clear Send mail fail Type RG create OK RG create fail RG delete RG rename VD create OK VD create fail VD delete VD rename VD read only VD write back VD write through VD extend VD attach LUN OK VD attach LUN fail VD detach LUN OK VD detach LUN fail VD init started VD init finished a D Link Document User Manual System voltages lt string gt failed The system will auto shutdown immediately The controller will auto shutdown immediately reason Voltage abnormal lt string gt Successfully detect UPS Failed to detect UPS AC loss for system is detected UPS Power Low The system will auto shutdown immediately Disk slot S M A R T Threshold Exceed Condition occurred for attribute lt string gt Disk lt slot gt Failure to get S M A R T information RedBoot failover event occurred Watchdog timeout shutdown occurred Watchdog timeout reset occurred Description username login from IP or serial con
68. U 02 U 03 L o4 O o5 U o6 U 07 los O o9 10 11 12 O13 1415 ines 18 U 19 20 O21 22 23 all Cloo O 15 O 30 O 45 Allowed Hosts ig OK Cancel TIP e La A daily snapshot will be taken at every 00 00 A weekly snapshot will be taken every Sunday 00 00 A monthly snapshot will be taken every first day of Rollback month 00 00 The data in snapshot can roll back to the original virtual disk Please follow the procedures 1 In Snapshots tab select a snapshot and then click W gt Schedule Rollback 2 Click OK to apply Copyright 2014 D Link System Inc All Rights Reserved 112 D Link a D Link Document User Manual CAUTION Before executing rollback it is better that the disk is unmounted on the host computer for flushing data from cache Snapshot Constraint Snapshot function applies Copy on Write technique on virtual disks and provides a quick and efficient backup method When taking a snapshot it does not copy any data the first time until a request of data modification comes in The snapshot copies the original data to a snapshot space and then overwrites the original data with new changes With this technique a snapshot only copies the changed data instead of copying whole data saving you a lot of disk space Create a data consistent snapshot Before using snapshot the user has to know why sometimes the data corrupts after rollback of snapshot Please refer to the following diagram
69. accessing the Network Setup Entity and ISNS Settings iSCSI Nodes Active Sessions CHAP Account Erite Entity and iSNS Settings iSCSI Nodes Active Sessions CHAP Accounts Fibre Channel Network Setup The Network Setup tab is used to change IP addresses of iSCSI data ports The two controllers have different iSCSI ports listed below DSN 6200 6500 Series DSN 6200 6 x GbE iSCSI ports per controller DSN 6500 2 x 10GbE iSCSI ports 2 x GbE iSCSI ports per controller These network ports must be assigned IP addresses before they can be used For better performance or fault tolerance reason they can be set as Trunking or LACP These bonding network ports share a single IP address The following example shows the DSN 6200 Series DSN 6210 6 x GbE iSCSI ports Show information for Controller 1 v Name LAG LAGNo VLANID UseDHCP IP Address Netmask Gateway Jumbo Frames MAC Address Link LAN1 No N A N A No 10 0 0 1 2552552550 100 0254 Disabled 00 13 78 bb 38 82 1 Gbps LAN2 No N A N A No 10 0 0 2 2552552550 10 0 0 254 Disabled 00 13 78 bb 38 83 Down LANA No N A N A No 10 0 0 4 255 255 255 0 10 0 0254 Disabled 00 13 78 bb 38 85 Down ER eg EJ LAN3 No N A N A No 10 0 0 3 255 255 255 0 10 000254 Disabled 00 13 78 bb 38 84 Down ERI Eyal LAN5 No N A N A No 10 0 0 5 255 255 255 0 10 0 0254 Disabled 00 13 78 bb 38 86 Down 255 255 255 0 10 0 0 254 Disabled 00 13 78 bb 38 87
70. al chassis 3 Global spare disks can support all RAID groups that are located in different chassis 4 When supporting SATA drives for the redundant JBOD model the 6G MUX board is required The 3G MUX board does not apply to this model 5 The following table is the maximum JBOD numbers and maximum HDD numbers with different chassis that can be cascaded Upgrade Firmware Before upgrading it is recommended to use the System maintenance Configuration Backup tab to export all configurations to a file To upgrade the firmware of JBOD please follow the procedures 1 In System Maintenance Upgrade tab choose JBOD first and then click Browse to select the firmware file JBOD Firmware Update Choose an JBOD Select the firmware file for the upgrade Browse Apply 2 Click Apply button it will pop up a warning message click the OK button to start upgrading the JBOD firmware 3 After upgrading has finished the JBOD system must reboot manually to make the new firmware take effect Copyright 2 2014 D Link System Inc All Rights Reserved 103 D Link a D Link Document User Manual MPIO and MC S These features come from iSCSI initiator They can be setup from the iSCSI initiator to establish redundant paths for sending I O from the initiator to the target MPIO In the Microsoft Windows server base system Microsoft MPIO driver allows initiators to login multiple sessions to the same
71. ans Used GB or MB snapshot space Total snapshot space The unit can be displayed in GB or MB Snapshot Number of snapshot s that have been taken RAID Group The RAID group name of the virtual disk The options available on this tab are Create Create a virtual disk Cloning Options Set the clone options Described in detail in chapter 5 These options are available after creating a virtual disk W gt Extend Extend the virtual disk capacity W gt Set SSD Caching Set SSD caching for the virtual disk Described in detail in chapter 5 W gt Verify Parity Execute parity check for the virtual disk It supports RAID 3 5 6 30 50 60 The options are o Verify and repair data inconsistencies o Only verify for data inconsistencies Stop verifying when 1 10 20 30 40 50 60 70 80 90 100 inconsistencies have been found WV gt Delete Delete the virtual disk W gt Set Properties Change the virtual disk name cache mode priority bg rate and read ahead o Cache Mode v Write through Cache A caching technique in which the completion of a write request is not signaled until data is safely stored in non volatile media Data is synchronized in both data cache and accessed physical disks v Write back Cache A caching technique in which the completion of a write request is signaled as soon as the data is in cache and actual writing to non volatile media occurs at a later time It speeds up system write performance
72. apacity This is described more detail in the Thin Provision section Copyright 2014 D Link System Inc All Rights Reserved 93 D Link 4 D Link Document User Manual Raid 0 300GB At least add two free ae disk become raid 6 Raid 6 300GB 3 2 SCH a HDD HDD HDD HDD HDD FOE WE HEES ennen 100GB 100GB 100GB 100GB 100GB Raid 5 200GB 2 1 At least add one free Raid 6 200GB disk become raid 6 HDD HDD HDD HDD HDD HDD HDD 400GB 100GB 100GB 100GB 100GB 100GB 100GB There are some limitations when a RAID group is being migrated or moved The system will reject these operations Add dedicated spare Remove a dedicated spare Create a new virtual disk Delete a virtual disk Extend a virtual disk Scrub a virtual disk Perform another migration operation Scrub entire RAID group 2 Xe 4 Qe S dae cB S qo Take a snapshot LA Delete a snapshot LA Expose a snapshot 12 Rollback to a snapshot TIP SEN Migrate function will migrate the member disks of RAID group to the same physical disks but it should increase the number of disks or it should be a different RAID level The Move function will move the member disks of a RAID group to totally different physical disks CAUTION RAID group migration or moving cannot be executed during rebuilding or virtual disk extension Take the example of migrating RAID group 1 Select Volume Configuration gt RAID Groups 2 Select a RAID group
73. ates any iSCSI communication It requests all SCSI operations like read or write An initiator is usually located on the host side either an iSCSI HBA or iSCSI SW initiator Copyright 2014 D Link System Inc All Rights Reserved 19 D Link a D Link Document User Manual The target is the storage device itself or an appliance which controls and serves volumes or virtual volumes The target is the device which performs SCSI command or bridge to an attached storage device SAS Concepts Serial attached SCSI offers advantages over older parallel technologies The cables are thinner and the connectors are less bulky Serial data transfer allows the use of longer cables than parallel data transfer The target is the storage device itself or an appliance which controls and serves volumes or virtual volumes The target is the device which performs SCSI command or bridge to an attached storage device SAS HBA SAS device 1 target Copyright 2 2014 D Link System Inc All Rights Reserved 20 D Link D Link Document User Manual Installation Installation Overview Before starting prepare the following items A management computer with a Gigabit Ethernet NIC recommend on the same network as the D Link storage system Connection cables o Use CAT 5e or CAT 6 recommend network cables for the management port Prepare a storage system configuration plan The plan should include network infor
74. back on UPS will start working and notify system to boot up OFF will not The IP address of the network UPS The SNMP community of the network UPS The status of UPS Detecting Running Unable to detect UPS Communication lost UPS reboot in progress UPS shutdown in progress Batteries failed Please change them NOW Current power percentage of battery level The system will shut down when either the Shutdown battery level or Shutdown Delay Seconds reaches the set condition Users should set these values carefully SES The SES SCSI Enclosure Services one of the enclosure management standards tab is used to enable or disable the management of SES Copyright 2014 D Link System Inc All Rights Reserved 81 D Link a D Link Document User Manual SCSI Enclosure Services SES SES is an enclosure management standard Use this screen to enable or disable SES Allowed Hosts Target LUN 0 0 Disable The options available on this tab are Enable Click the Enable button to enable SES Disable Click the Disable button to disable SES The SES client software is available at the following web site SANtools http www santools com S M A R T S M A R T Self Monitoring Analysis and Reporting Technology is a diagnostic tool for hard drives to deliver warnings of drive failures in advance It provides users a chance to take action before a possible drive fail
75. bal spare Config read fail Config write fail PD read error PD write error PD scrub started PD scrub completed PS fail PS normal FAN fail FAN normal Volt warn OV Volt warn UV Volt crit OV Volt crit UV Volt recovery Therm warn OT Therm warn UT Therm fail OT Therm fail UT Therm recovery JBOD HDD path NG PD RPS started L2F PD RPS started F2L PD RPS started F2F PD RPS finished L2F a D Link Document User Manual JBOD lt name gt disk lt slot gt Failure to get S M A R T information Controller lt number gt of JBOD lt name gt is inserted into system Controller lt number gt of JBOD lt name gt is removed from system JBOD lt name gt is in degraded mode Assign JBOD lt name gt PD lt slot gt to be the dedicated spare disk of RG lt name gt Assign JBOD lt name gt PD lt slot gt to Global Spare Disks Config read error occurred at LBA lt address gt lt address gt of JBOD lt name gt PD lt slot gt Config write error occurred at LBA lt address gt lt address gt of JBOD lt name gt PD lt slot gt Read error occurred at LBA lt address gt lt address gt of JBOD lt name gt PD lt slot gt Write error occurred at LBA lt address gt lt address gt of JBOD lt name gt PD lt slot gt JBOD lt name gt PD lt slot gt starts disk scrubbing process JBOD lt name gt PD lt slot gt completed disk scrubbing process Power Supply of lt string gt in JBOD lt name gt i
76. be displayed as below There are two more tables to describe the properties of the thin provisioning RAID group RAID Set and RAID Group Policy Show RAID size in GB Name Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Number of Virtual Disk Status Health RAID Current Controller Preferred Controller v RO 1862 1862 1862 Disabled 1 0 Online Good RAIDO Controller 1 Controller 1 CICHE E RADI Senge Cantor RAID Set No Total Size GB Free Size GB Disks Used RAID Cell Status Health v 1 1862 1862 2 1 Online Good RAID Group Policy 1 No Threshold Level Action EA 1 60 Information Take no Action E 2 70 Information Take no Action ESI 3 8096 Information Take no Action ESI 4 8596 Warning Reclaim Space iS 5 90 Warning Delete Snapshots ISS 6 95 Warning De activate RAID Group This table shows the column descriptions of RAID Set Column Name No Total Size GB Free Size GB Copyright 2014 D Link System Inc All Rights Reserved Description The number of the RAID set Total capacity of the RAID set Free capacity of the RAID set 65 D Link a D Link Document User Manual Disks Used The number of physical disks in the RAID set RAID Cell The number of RAID cells in the RAID set Status The status of the RAID group Online the RAID group is online Offline the RAID group is offline Rebuilding the RAID group is being rebuilt Migrate the R
77. but needs to bear the risk where data may be inconsistent between data cache and the physical disks in one short time interval Default v Read Only Set the volume to be read only any write request is forbidden Copyright 0 2014 D Link System Inc All Rights Reserved 69 D Link a D Link Document User Manual o Priority v High Priority Default v Medium Priority v Low Priority o Bg Rate v 4 3 2 1 0 Default value is 4 The higher number the background priority of a virtual disk has the more background I O will be scheduled to execute o Read Ahead v Enabled The system will discern what data will be needed next based on what was just retrieved form disk and then preload this data into the disks buffer This feature will improve performance when the data being retrieved is sequential Default Y Disabled Disable disk read ahead o AV Media Mode v Enabled Enable AV media mode for optimizing video editing v Disabled Disable AV media mode Default o Type Y RAID The virtual disk is normal Default v Backup Target The virtual disk is used for clone or Replication usage W Space Reclamation Reclaim space for the virtual disk W gt Attach LUN Attach a logical unit number to the virtual disk VY gt Detach LUNs Detach a logical unit number from the virtual disk W gt List LUNs List all of the attached logical unit numbers WV gt Set Clone Set the target virtual disk for clone W
78. c characters Change User Password Check it to change user password The maximum length of password is 12 alphanumeric characters When it is done click the Apply button Email Notification Settings The Email Notification Settings tab is used to enter up to three email addresses for receiving the event notifications Fill in the necessary fields and click Send Test Email button to test whether it is available Some email servers will check the mail from address and need the SMTP relay settings for authentication VN TIP X Please make sure the DNS server IP is well setup in System Configuration Network Settings So the event notification emails can be sent successfully Copyright 2 2014 D Link System Inc All Rights Reserved 49 D Link a D Link Document User Manual You can also select which levels of event logs that you would like to receive The default setting only includes Warning and Error event logs Configure Email Notification Settings You can specify up to three email addresses for email notifications You should use the SMTP server option to specify a specific email server that you would like to use for sending email notifications required if your network will not allow this device to send the email directly After the information is set you can click Send test mail to test whether email functions are available Email Settings From Email Address mailman QsanTechnology com To Email Address 1
79. cation Task To start replication task please follow procedure below 1 In Replications tab of the source side select the source virtual disk and then click W Start 2 Click OK button The source and target virtual disks will take snapshots and then start replication Show snapshots for virtual disk SourceVD V Show disk size in GB Y Show snapshots for virtual disk TargetVD Show disk size in G8 v No Name Used GB Status Health Exposure No Name Used GB Status Health Exposure 1 1 QREP309461 0 N A Good No v 1 QREP309461 0 N A Good No Set Snapshot Space Scheduled Snapshots Take a Snapshot Cleanup Snapshots Set Snapshot Space H Scheduled Snapshots Take a Snapshot Cleanup Snapshots Figure 5 Source side Figure 6 Target side To stop the replication task please follow the procedure below 1 In Replications tab of the source side select the source virtual disk and then click W Stop 2 Click the OK button to stop replication MPIO To setup MPIO Multi Path Input Output of the replication task please follow the procedure below L Select the task in Replications tab and then click W gt Add Path 2 Follow the same steps as the procedure for creating a new replication task To delete multi path of the replication task please follow the procedure below 1 Select the task in Replications tab and then click W gt Delete Path 2 Select the path s that you want to be
80. cation task please follow the procedures 1 Select the task in Replications tab and then click W gt Delete 2 Click OK button to delete the replication task Clone Transfers to Replication It is always a problem doing a full copy over LAN or WAN when the replication task is executed the first time It may take days or weeks to replicate data from the source to target within limited network bandwidth We provide two methods to help users shorten the time of executing a full copy Copyright 2014 D Link System Inc All Rights Reserved 126 D Link a D Link Document User Manual T Skip full copy on a new clean virtual disk The term clean means that the virtual disk has never had data written on it since created For a new created virtual disk which has not been accessed the system will recognize it and skip full copy automatically when the replication job is created on this virtual disk the first time ET TIP X Any IO access to the new created virtual disk will make it not clean even executing the Erase function when the virtual disk is created The full copy will take place in such a case 2 The other way is to use virtual disk clone function which is a local data copy function between virtual disks to execute full copy the first time Then move all the physical drives of the target virtual disk to the target system and then turn the cloning job into a replication task with differential copy afterward
81. ch a logical unit number from the virtual disk 1 Click the Attach LUN button Attach LUN Attach a logical unit number LUN to a virtual disk Virtual Disk VD 01 30 GB Allowed Hosts ki Add Host Target d LUN LUN 1 Permission Read only Read write OK Cancel 2 Select the Protocol FC models only 3 Select a Virtual Disk from the drop down list 4 Enter the Allowed Hosts with semicolons or click Add Host button to add each individually Fill in wildcard for access by all hosts Select a Target number from the drop down list Select a LUN from the drop down list Check the Permission level US M x XH Click OK button The matching rules of access control are followed from created time of the LUNs The earlier created LUN is prior to the matching rules For example there are 2 LUN rules for the same VD one is LUN O0 and the other is iqn host1 LUN 1 The host ign host2 can login successfully because it matches the rule 1 Wildcard and are allowed in this field can replace any word can replace only one character For example iqn host gt ign host1 and iqn host2 are accepted Copyright 2014 D Link System Inc All Rights Reserved 76 D Link a D Link Document User Manual iqn host gt ign host1 and ign host12345 are accepted This field cannot accept comma so iqn host1 iqn host2 stands a long string
82. changed here Service Ports If the default port numbers of HTTP HTTPS and SSH are not allowed on the network they can be changed here When it is done click the Apply button Login Settings The Login Settings tab is used to control access to the storage system For security reasons set the auto logout option or set the limit access to one administrator at a time The other options can change the Admin and User passwords Copyright 2014 D Link System Inc All Rights Reserved 48 D Link D Link Document User Manual Change Login Options and Passwords When the auto logout option is enabled you will be logged out of the admin interface after the time specified The login lock option prevents multiple people from administering the storage server at the same time Login Options Auto Logout Disable Login Lock Disable Change Admin Password C Change User Password Apply The options available on this tab are Auto Logout When the auto logout option is enabled you will be logged out of the admin interface after the time specified The options available are Disable default 5 minutes 30 minutes and 1 hour options Login Lock When the login lock is enabled the system allows only one user to login to the web UI at a time There are Disable default and Enable options Change Admin Password Check it to change administrator password The maximum length of password is 12 alphanumeri
83. dly which means that the data written is not completely spread across the whole volume Applications that spread metadata across the Copyright 0 2014 D Link System Inc All Rights Reserved 101 D Link a D Link Document User Manual entire volume will prevent the advantages of thin provisioning Some applications that expect the data to be contiguous at block level are not good candidates for thin provisioning either Thin provisioning works well with email systems web based archives or regular file archive systems When the number of supported volumes grows larger the benefits of Thin provisioning will become more apparent Disk Roaming Physical disks can be re sequenced in the same system or move all physical disks in the same RAID group from system 1 to system 2 This is called disk roaming T system can execute disk roaming online Please follow the procedure below 1 In Volume Configuration gt RAID Group tab select a RAID group And then click Deactivate 2 Click OK to apply The Status changes to Offline 3 Move all physical disks of the RAID group to another system 4 In Volume Configuration RAID Group tab select the snapshot And then click W Activate 5 Click OK to apply The Status changes to Online Disk roaming has some constraints as described below 1 Check the firmware version of two systems first It is better that either systems have the same firmware version or that the firmware
84. e LUN Time Created a D Link Document User Manual The amount of the snapshot space that has been used The unit can be displayed in GB or MB The status of the snapshot N A The snapshot is normal Replicated The snapshot is for clone or Replication usage Abort The snapshot is out of space and will abort The health of the snapshot Good The snapshot is good Failed The snapshot has failed The snapshot is exposed or not The cache mode of the snapshot N A Unknown when the snapshot is unexposed Read write The snapshot can be read write Read only The snapshot is read only Number of LUN s that snapshot is attached to The created time of the snapshot The options available on this tab are Set Snapshot Space Set snapshot space for preparing to take snapshots Schedule Snapshots Set the snapshots by schedule Take a Snapshot Take a snapshot on the virtual disk Cleanup Snapshots Clean all snapshots of the virtual disk and release the snapshot space The options available after taking a snapshot are x W gt Set Quota Set the snapshot quota s W gt Rollback Rollback the snapshot S WV gt Delete Delete the snapshot The options available after setting the quota of the snapshot are d WV gt Unexpose Unexpose the snapshot VD W gt Attach LUN Attach a logical unit number to the snapshot W gt Detach LUNs Detach a logical unit nu
85. e It needs to be recharged or replaced 4 Management port 5 Console port 6 RS 232 port for UPS 7 SAS JBOD expansion port 8 BBM slot 9 USB No function Reserved for the future design purpose LED 1GbE Link LED All Orange Asserted when a 1G link is established and maintained Green Asserted when a 100M link is establish and maintained 1GbE Access LED All Blinking green Asserted when the link is established and packets are being transmitted along with any receive activity 10GbE Link LED DSN 6500 Orange Asserted when a 1G link is established and maintained Blue Asserted when a 10G link is establish and maintained 10GbE Access LED DSN 6500 Yellow Asserted when the link is established and packets are being transmitted along with any receive activity CAUTION Be aware that when Controller Health LED is in RED please DO NOT unplug the controller from the system or turn off the power suddenly This may cause unrecoverable damage which will not be covered by warranty Copyright 2014 D Link System Inc All Rights Reserved 16 D Link a D Link Document User Manual DSN 6200 6 x GbE iSCSI controller DSN 6020 6G SAS JBOD controller RAID Concepts RAID is the abbreviation of Redundant Array of Independent Disks The basic idea of RAID is to combine multiple drives together to form one large logical drive This RAID drive obtains performance capacity and re
86. e gt aborted replication to VD lt name gt Level Type Description WARNING RG threshold hit The used capacity of RG lt name gt exceeds lt number gt percent INFO RAID set created RAID set lt number gt has been added into RG lt name gt INFO RAID set deleted RAID set lt number gt was deleted from RG lt name gt INFO VD reclaim started VD lt name gt starts space reclamation process INFO VD reclaim VD lt name gt finished space reclamation process completed WARNING VD reclaim The space reclamation in VD lt name gt was aborted aborted DEBUG level events are displayed in download event log file only Copyright 2014 D Link System Inc All Rights Reserved 147 D Link a D Link Document User Manual Software Application Microsoft iSCSI Initiator Here is the step by step process to setup Microsoft iSCSI Initiator Please visit Microsoft website for the latest iSCSI initiator This example is based on Microsoft Windows Server 2008 R2 Connect to iSCSI Target 1 Run Microsoft iSCSI Initiator 2 Input IP address or DNS name of the target And then click Quick Connect button iSCSI Initiator Properties EN Targets Discovery Favorite Targets Volumes and Devices RADIUS Configuration LEE To discover and log on to a target using a basic connection type the IP address or DNS name of the target and then click Quick Connect Target 192 168 21 1 Discovered targets Refresh Name L t
87. e te 35 Quick Installation MOO EE 35 Volume Creation Wizaf E 40 BASIC CONFIGURATION KE 44 UNE REGER Eegenen 44 SYSTEM CONE GRA TI eegene 46 DY SUSI SCL de 47 Va ele elluuocm 47 Ea AY e glat 48 Email Notification de E 49 OS AIC ICI di cT Im OO m TO LO 50 HOST PORT Z ISCSlCONEIGURATION ttot treste teette ttre ttres treste settee teneeeeneereoseeene 52 Klee Melle E EE 52 Entity and CRT 55 DS SM lS e 56 nh o cclo pb 58 CHAP ACCOUN c OES 59 VOLUME CONFIGURATION WE 60 PASCI EE 61 PAID GOI Mu C eae ane 63 leg Cer 68 Sinn T ize A E paca seasons Ao HO 72 Wai I ee teense on veri seen enw eg ens cess area ees ent w 75 FR ON aE ME 77 ENCLOSURE MANAGEMEN EE 78 FACING eu e E 79 BE 80 E e 81 SALUS Fe UC S 82 eh EH OR e corer n dere E a E FUR IUE ROTE SU UTI aerate aaa 83 System ane en E dE 83 SE le 84 EE a A E E urn 85 Firmware Synchronization Only available in Dual controller model 86 Reset tO Factory DII LE EE OE 87 Conigeuration BiG eie TEE OO m 87 Copyright 0 2014 D Link System Inc All Rights Reserved 6 D
88. en MaxDataBurstLen Maximum Data Burst Length determines the maximum SCSI data payload The default value is 256kb DataSeginOrder DataSeginOrder Data Sequence in Order determines if the PDU Protocol Data Units are transferred in continuously non decreasing sequence offsets The default value is Yes DataPDU InOrder DataPDU InOrder Data PDU in Order determines if the data PDUs within sequences are to be in order and overlays forbidden The default value is Yes The options available on this tab are YV gt Connection Details It can list all connection s of the selected session Connection No Initiator IP Initiator name MaxRecvDataSegLen MaxTransDataSegLen Authentication 1 19216810121 iqn 1991 05 com microsoftqsan 16384 65536 No OK W gt Disconnect Disconnect the selected session click the OK button to confirm CHAP Accounts The CHAP Account tab is used to manage the CHAP accounts on the system The options available on this tab are Copyright 0 2014 D Link System Inc All Rights Reserved 59 D Link 4 D Link Document User Manual Create User Create a CHAP user create a Create a CHAP User Enter the required information below to create a new CHAP user If you would like this CHAP user to have access to more than one node then you can use the control key Windows and Linux or the command ke to select multiple nodes User Name chapi Max 223 999290900095 Min
89. erence Therefore enough snapshot space for the virtual disk is very important Of course clone job can also be set as schedule Setup Clone Take an example of cloning the virtual disk d Before cloning DSN 6200 6500 must prepare backup target virtual disk In the Virtual Disks tab click Create button And then select Disk Type to Backup Target Create a Virtual Disk Create a Virtual Disk Virtual Disk Name SourceVD Virtual Disk Name TargetVD Data Storage R5 iv Data Storage R5 iv Size 10 cB v Size 10 cB v Stripe Size KB 64 Stripe Size KB 64 Block Size Bytes 512 iv Block Size Bytes 512 v Cache Mode O write through Cache 9 write Cache Mode O write through Cache write I Priority High Priority O Medium Prior Priority High Priority O Medium Prior Bg Rate 4 iv DI Bg Rate 4 N DI Read Ahead Enabled N e Read Ahead Disabled v D AV Media Mode Disabled v AV Media Mode Disabled v Erase Do Not Erase y Erase Do No ase y RAID Disk Type RAID Disk Type Backup Target nin Figure 1 Source side Figure 2 Target side 2 Select the source virtual disk and then click W gt Set Clone 3 Select a target virtual disk and then click OK button Copyright 2014 D Link System Inc All Rights Reserved 115 D Link a D Link Document User Manual Select a Virtual Disk Target Name Size GB Status Health RAID RAID Gr
90. f incremental data So it will start a full copy at the next clone process When running out of snapshot space the virtual disk clone procedure will resemble following diagram Copyright 2014 D Link System Inc All Rights Reserved 118 D Link D Link Document User Manual C VD Clone D Yes Schedule clone no Check threshold Manually start every hour clone by user Run out of Run out of snapshot space snapshot space Auto delete old Manually release clone snapshot snapshot space Auto restart an Restart clone hour later by user Start clone process with fully copy Done Replication The replication function can replicate data easily through LAN or WAN from one system to another The replication operation is as follows At the beginning copy all data from the source virtual disk to target This is also called a full copy Afterwards use snapshot technology to perform an incremental copy Please be fully aware that the incremental copy needs to use a snapshot to compare the data difference Therefore enough snapshot space for the virtual disk is very important Of course the replication task can also be set to a schedule Create Replication Task Take an example of creating the Replication task 1 Before replication it must prepare backup target virtual disk In the Virtual Disks tab click
91. for the aggregation group W gt iSCSI IP Address Settings It can assign an iSCSI IP address of the iSCSI data port There are two options Use DHCP to acquire an IP address automatically or Specify a Static IP Address to set the IP address manually iSCSI IP Address Settings Y ou can select DHCP to acquire an IP address automatically or select Static to ify an IP address manually Use DHCP Kg Specify a Static IP Address IP Address 10 0 0 1 Subnet Mask 255 255 255 0 Gateway 10 0 0 254 cx emn W gt Make Default Gateway Set the gateway of the IP address as default gateway There can be only one default gateway To remove the default gateway click W gt Remove Default Gateway Y gt Enable jumbo frames It can enable the MTU Maximum Transmission Unit size The maximum jumbo frame size is 3900 bytes To disable jumbo frames click W gt Disable Jumbo Frames Copyright 2 2014 D Link System Inc All Rights Reserved 54 D Link a D Link Document User Manual CAUTION VLAN ID jumbo frames for both the switching hub and HBA on host must be enabled Otherwise the LAN connection cannot work properly Y gt Ping host It can verify the port connection from a target to the corresponding host data port Input the host s IP address and click the Start button The system will display the ping result Or click the Stop button to stop the test Please input the host s IP address 192
92. formation for debugging Copyright 2014 D Link System Inc All Rights Reserved 83 D Link Ze D Link Document User Manual CAUTION If you try to increase the system memory while running dual controller mode please make sure both controllers have the same DIMM on each corresponding memory slot Failing to do so will result in controller malfunction which will not be covered by warranty Event log The Event Log tab provides a log or event messages The options available on this tab are Download Save the event log as a text file with file name log ModelName SerialNumber Date Time txt It will pop up a filter dialog as the following The default is Download all event logs Download Event Logs Download all event logs 1096 of the latest event logs 22096 of the latest event logs The latest 24 hours event logs The latest 7 days event logs The latest 31 days event logs OK Cancel Mute Buzzer Turn off the system alert alarm Clear Clear all event logs i TIP D La Plug in any of the first four hard drives to enable event logs to be saved and displayed in next system boot up Otherwise the event logs cannot be saved and will disappear Copyright 2014 D Link System Inc All Rights Reserved 84 D Link Event Log Level to Sh lt lt first prev Information Information Information Information Information Information Information Error Error
93. group automatically LACP The Link Aggregation Control Protocol LACP is a part of IEEE specification 802 3ad It allows the bundling of several physical ports together to form a single logical channel A network switch negotiates an automatic bundle by sending LACP packets to the peer Theoretically the LACP port can be defined as active or passive D Link controllers implement it as active mode which means that LACP port sends LACP protocol packets automatically Please note that you are using the same configurations between the D Link controller and gigabit switch The usage occasion of LACP It s necessary to use LACP in a network environment of multiple switches When adding new devices LACP will separate the traffic to each path dynamically k Lj gt a E A D V pud 1 F edarki a cb Zeene Se e K NK E 1 LCE M E NV Trunking Trunking is not a standard protocol It defines the usage of multiple iSCSI data ports in parallel to increase the link speed beyond the limits of any single port The usage occasion of Trunking This is a simple SAN environment There is only one switch to connect the server and storage and there will be no extra server added in the future There is a request for monitoring the traffic on the trunk in the switch Copyright 2014 D Link System Inc All Rights Reserved 106 D Link a D Link Document User Manual Apphcaune server 9 CAUTION Before using trun
94. group is being migrated Scrubbing the RAID group is being scrubbed Health The health of the RAID group Good the RAID group s health is good Failed the RAID group has failed Degraded the RAID group is not healthy and not completed The reason could be lack of disk s or a failed disk RAID The RAID level of the RAID group Current The controller of the RAID group The default is controller 1 Controller This option is only visible when dual controllers are installed Preferred The preferred controller of the RAID group The default is controller 1 Controller This option is only visible when dual controllers are installed The options available on this tab are Create Create a RAID group The options available after creating a RAID group are WV gt Migrate RAID Level Change the RAID level of a RAID group Please refer to the next chapter for details WV gt Move RAID Level Move the member disks of RAID group to totally different physical disks W gt Activate Deactivate Activate or deactivate the RAID group after disk roaming Activate can be executed when the RAID group status is offline Conversely Deactivate can be executed when the status is online These are for online disk roaming purpose W gt Verify Parity Regenerate parity for the RAID group It supports the RAID level 3 5 6 30 50 60 WV gt Delete Delete the RAID group W gt Change Preferred Controller Set the RAID gro
95. he back side O aSatateSe OOOO secetececes see rs ais 222e RK 25927 E S L We i LN E Sege Ei Kg er e e XH ra s s s er Latch Release the screws Connect the BBM into the PSU CAUTION Please do not touch the connector pins of the PSU when the BBM is connected v 4 Ce si o Replace the cover on the PSU and secure the bracket with screws N 7 f K d vex TN Ce Copyright 2014 D Link System Inc All Rights Reserved 22 D Link a D Link Document User Manual o Plug it into the chassis o Install the Disk Drives o Connect the management port cable and data port cables per the network plan the topology examples for this are below Copyright 2014 D Link System Inc All Rights Reserved 23 D Link 4 D Link Document User Manual DSN 6200 series DSN 6220 iSNS server Management Recom mended APC Smart UPS Optional Gigabit switch HH Switch To DSN 6020 Net cable To DSN 6020 RS 232 cable SAS cable DSN 6500 series DSN 6520 iSNS server Management Recom mended APC Smart UPS Optional 10 GbE switch To DSN 6020 Net cable To DSN 6020 RS 232 cable SAS cable FC cable Copyright 0 2014 D Link System Inc All Rights Reserved 24 D Link a D Link Document User Manual JBOD DSN 6020 Host Server iiia un Switch BR BBM FC iSCSI SAS
96. he selected hard drive free for use W gt Set Global Spare Set the selected hard drive to global spare for all RAID groups W gt Set Local Spare Set the selected hard drive to a local spare for the RAID groups located in the same enclosure WV gt Set Dedicated Spare Set a hard drive to a dedicated spare of the selected RAID group W gt Upgrade Upgrade the firmware of the hard drive W gt Disk Scrub Scrub the hard drive It s not available when the hard drive is in use YV gt Read Error Cleared Clean the read error of the hard drive Y gt Turn on off the indication LED Turn on the indication LED of the hard drive Click it again to turn off WV gt More information Display the hard drive details Take for example setting the physical disk to a dedicated spare disk 1 Check W gt Set Dedicated Spare at one physical disk Copyright 0 2014 D Link System Inc All Rights Reserved 62 D Link a D Link Document User Manual Set Dedicated Spare No Name Total GB Free Capacity GB Disks Used Number of Virtual Disk Status Health RAID Online OK Cancel 2 If there is any RAID group which is in protected RAID level and can be set with a dedicated spare disk select one RAID group and then click OK button M TIP e La e For DSN 6200 6500Series the maximum number of physical drives in a system is 256 RAID Groups The RAID Groups tab is provided to crea
97. hen the other in sequence Mirroring of RAID 0 volumes RAID 0 1 allows two hard drives to fail or be unplugged but on the same array Striping over the member of RAID 1 volumes RAID 10 allows two hard drives to fail or be unplugged but in different arrays Striping over the member of RAID 3 volumes RAID 30 allows two hard drives to fail or be unplugged but in different arrays Striping over the member of RAID 5 volumes RAID 50 allows two hard drives fail or be unplugged but in different arrays Striping over the member of RAID 6 volumes RAID 60 allows four hard drives to fail or be unplugged two per array The abbreviation of Just a Bunch Of Disks No data protection RG fails if any hard drive failures or unplugs Migrate and Move RAID Groups Migrate RAID Level function changes the RAID group to different RAID level or adds the member disks of the RAID group for larger capacity Usually the RAID group migrates to higher RAID level for better protection To do migration the total size of RAID group must be larger than or equal to the original RAID group The limitation is that it s not allowed to expand the same RAID level with the same physical disks of the original RAID group There is a similar function Move RAID Level which moves the member disks of the RAID group to totally different physical disks In addition the thin provision RAID group cannot execute migrate or move it uses Add RAID Set to enlarge c
98. his option is available when the RAID group is not RAID O The default value is Disabled o Disk Type Select type for normal or backup usage The options are RAID for general usage and Backup Target for Clone or Replication The default value is RAID 6 Click OK button to create the virtual disk 7 At the confirmation message click OK button NT TIP XU In DSN 6200 6500 Series the maximum number of virtual disks in a RAID group is 96 The maximum host number per virtual disk is 16 The maximum host number per controller is 64 The maximum virtual disk number in a system is 2048 The max virtual disk number for snapshot is 32 CAUTION If the system shutdown or rebooted when creating a virtual disk the erase process will stop Snapshots The Snapshots tab is provided to create modify delete or view the status of snapshot The two drop down lists at the top enable you to switch the virtual disks The other is to change the drive size units MB or GB Show snapshots for virtual disk D 01 Show disk size in GB Name Used GB Status Health Exposure Cache Mode LUN SnapVD 01 0 No WIA N A Take a Snapshot Cleanup Snapshots Rollback ace Schedule Snapshots Delete This table shows the column descriptions Column Name Description No Number Name Snapshot name Copyright 2014 D Link System Inc All Rights Reserved 72 D Link Used GB or MB Status Health Exposure Cache Mod
99. how to set up and use the D Link DSN 6200 6500 series storage systems The storage array available in different configurations of GbE iSCSI 10GbE iSCSI and SAS interfaces provides a flexible intelligent storage area network SAN solution for virtualized server environments and the glowing demand for data storage D Link storage systems can provide non stop service with a high degree of fault tolerance by using D link RAID technology and advanced array management features Model Comparison D Link storage system DSN 6200 6500 Series stands for the following models DSN 6200 Series 6 x GbE iSCSI ports per controller DSN 6210 single controller DSN 6220 dual active controller DSN 6500 Series 2 x 10GbE iSCSI ports SFP 2 x GbE iSCSI ports per controller DSN 6510 single controller DSN 6520 dual active controller Copyright 2014 D Link System Inc All Rights Reserved 10 D Link a D Link Document User Manual Package Contents The package contains the following items S D Link DSN 6200 DSN 6500 Series 1GbE 10GbE IP SAN STORAGE x1 HDD trays x12 Power cords x2 RS 232 cables x2 one is for console black color phone jack to DB9 female and the other is for UPS gray color phone jack to DB9 male Rail kit x1 set Keys screws for drives and rail kit x1 packet CD Quick Installation Guide Hardware This section provides basic information about the hardwa
100. iSCSI IP Address Settings Make Default Gateway Enable Jumbo Frames Reset Port Copyright 2014 D Link System Inc All Rights Reserved 52 D Link a D Link Document User Manual This figure shows six iSCSI data ports These data ports are set up with a static IP address For the other controllers they can be set up the same way The options available on this tab W gt iSCSI Bonding Settings The default mode of each iSCSI data port is for it to be individually connected without any bonding Trunking and LACP Link Aggregation Control Protocol settings can be setup here At least two iSCSI data ports must be checked for iSCSI bonding Network Bonding Settings Select the network interfaces that you would like to bond together Bonding Method 9 Trunking O LACH IP Address 10 0 0 1 Subnet Mask 255 255 255 0 Gateway 10 0 0 254 Network Setup Wani MiLAN Liana Liana Lans Lane OK Cancel o Trunking Configures multiple iSCSI ports to be grouped together into one in order to increase the connection speed beyond the limit of a single iSCSI port o LACP The Link Aggregation Control Protocol is part of IEEE specification 802 3ad that allows bonding of several physical ports together to form a single logical channel LACP allows a network switch to negotiate an automatic bundle by sending LACP packets to the peer The advantages of LACP are that it increases bandwidth usage and it automatically pe
101. ides the sync tool Microsoft develops VSS volume shadow copy service to prevent this issue VSS is a mechanism for creating consistent point in time copies of data known as shadow copies It is a coordinator between backup software application SOL or Exchange and storage to make sure the snapshot doesn t have the problem of data inconsistencies For more detail about the VSS please refer to http technet microsoft com en us library cc785914 aspx The DSN 6200 6500 storage system can support Microsoft VSS What if there is not enough snapshot space Before using snapshot a snapshot space is needed from RAID group capacity After a period of working snapshot what if the snapshot size is over the snapshot space defined by the user There are two different situations 1 If there are two or more snapshots existing the system will try to remove the oldest of snapshots to release more space for the latest snapshot until enough space is released 2 If there is only one snapshot the snapshot will fail Because there isn t enough snapshot space For example if there are two or more snapshots existing on a virtual disk and the latest snapshot keeps growing When it comes to the moment when the snapshot space has run out the system will try to remove the oldest snapshot to release more space for the latest snapshot usage As the latest snapshot is growing the system keeps removing the old snapshots When it comes that the latest sna
102. ill be scheduled to execute The type of the virtual disk RAID the virtual disk is normal SZ BACKUP the virtual disk is for backup usage The clone target name of the virtual disk The clone schedule of the virtual disk The status of the virtual disk Online The virtual disk is online Offline The virtual disk is offline Initiating The virtual disk is being initialized Rebuilding The virtual disk is being rebuilt Migrating The virtual disk is being migrated Rollback The virtual disk is being rolled back Parity checking The virtual disk is being parity check The health of virtual disk Write Priority Bg Rate Type Clone Schedule Clone Status Health Copyright 2014 D Link System Inc All Rights Reserved 68 D Link a D Link Document User Manual Optimal the virtual disk is working well and there is no failed disk in the RG Degraded At least one disk from the RG of the Virtual disk is failed or plugged out Failed the RAID group disk of the VD has single or multiple failed disks than its RAID level can recover from data loss Partially optimal the virtual disk has experienced recoverable read errors After passing parity check the health will become Optimal R Ratio of initializing or rebuilding RAID RAID level LUN Number of LUN s that the virtual disk is attached to Snapshot space The virtual disk size that is used for a snapshot The number me
103. in Provisioning Disabled Write Cache Disabled Standby Disabled Read Ahead Enabled Command Queuing Enabled 7 OK Cancel 2 Enter a RAID Name for the RAID group 3 Select a RAID Level from the drop down list 4 Click the Select Disks button to select disks from either local or expansion JBOD systems and click OK to complete the selection The selected disks are displayed at RAID Disks 5 Optionally configure the following o Preferred Controller This option is only visible when dual controllers are installed The default value is Auto Thin Provisioning This option is only visible when the thin provisioning feature is enabled The default value is Disabled Write Cache Enable or disable the write cache option of the hard drives The default value is Disabled Standby Enable or disable the auto spin down function of the hard drives When this option is enabled and the hard drives have no I O access after a certain period of time they will spin down automatically The default value is Disabled Read Ahead Enable or disable the read ahead function The default value is Enabled Command Queuing Enable or disable the hard drives command queue function The default value is Enabled 6 At the confirmation dialog click OK button to create the RAID group TIP For the DSN 6200 6500 Series the maximum number of physical drives in a RAID group is 64 Copyright 2014 D Link System Inc All Rights Rese
104. in login from 192 168 135 1 via web UI CTR1 Virtual disk VD 02 has completed rebuilding CTR1 Virtual disk VD 02 has started rebuilding CTR1 Virtual disk VD 01 has completed rebuilding a D Link Document User Manual lt lt first lt prev 1 2 3 4 5 6 7 8 9 10 next last The event logs are displayed in chronological order the latest event log is on the first top page They are actually saved in the first four hard drives each hard drive has one copy of the event log For each system there are four copies of event logs to make sure users can check an event log any time when there are failed disks Upgrade The Upgrade tab is used to upgrade controller firmware JBOD firmware and change operation mode Before upgrading we recommend first using Configuration Backup tab to export all configurations Copyright 2 2014 D Link System Inc All Rights Reserved 85 D Link D Link Document User Manual Controller Module Firmware Update Select the firmware file for the upgrade Browse JBOD Firmware Update Choose an JBOD Select the firmware file for the upgrade Browse Operation Mode The options available on this tab are Controller Module Firmware Update Please prepare new controller firmware file named xxxx bin in local hard drive then click Browse to select the firmware file Click the Apply button it will pop up a warning message click the OK butto
105. is public You can check the alert levels that you would like to receive The default setting only includes Warning and Error event logs If necessary click Download to get the MIB file for importing to the SNMP client tool There are many SNMP tools available on the internet o SNMPc http www snmpc com o Net SNMP http net snmp sourceforge net Windows Messenger You must enable the Messenger service in Windows Start gt Control Panel gt Administrative Tools gt Services gt Messenger It allows up to three host addresses You can also check the alert levels for receiving emails here System Server Settings Fill in the host address and the facility for syslog service The default UDP port is 514 You can also check the alert levels here There are some syslog server tools available on the internet for Windows o WinSyslog http www winsyslog com o Kiwi Syslog Daemon http www kiwisyslog com Copyright 2014 D Link System Inc All Rights Reserved 51 D Link 4 D Link Document User Manual Most UNIX systems build in syslog daemon Admin Interface and Front Display Alerts You can check the alert level that will activate a pop up message in the Web Ul or on the front display Device Buzzer Check it to disable the device buzzer Uncheck it to activate the device buzzer When it is done click the Apply button Host Port iSCSI Configuration The Host port iSCSI Configuration menu option is for
106. isk Health Check 1 Click Quick Installation from the menu bar 2 Enter a System Name and set up the Date and Time Click the Next button to proceed Copyright 2 2014 D Link System Inc All Rights Reserved 35 D Link a D Link Document User Manual Quick Installation Step 1 System Settings System Name System Name Osan kl Change Date and Time Current Time 0141 17 10 41 5 Time Zone GMT 08 00 Taipei amp Setup Date and Time Manually 2014 1 M vN i0 v 390 so 3 Confirm or change the management port IP address and DNS server If the default HTTP HTTPS and SSH port numbers are not allowed on your network they can be changed here as well Copyright 2 2014 D Link System Inc All Rights Reserved 36 D Link a D Link Document User Manual Use DHCP Use BOOTP Specify a Static IP Address IP Address 192 168 1 234 Subnet Mask 255 255 0 0 Gateway EI 4 For iSCSI Configurations use this step to set up the data port iSCSI IP address and then click the Next button Copyright 2 2014 D Link System Inc All Rights Reserved 37 D Link a D Link Document User Manual Quick Installation Step 3 iSCSI IP Address Settings LJ Use DHCP Specify a Static IP Address Address 10 0 0 1 Mask 255 255 255 0 Gateway 10 0 0 254 5 Choose a RAID Level The number in the brackets is the maximum capacity at the RAID level This step utilizes a
107. k All eee A o4 O o5 O o6 O o7 Hours in the Day Llos Oo 0O 100 11 12 O13 1415 16 U17 O i8 19 20 LJ 21 LJ 22 23 Minutes in the Hour CI all Coo O 15 O 30 O 45 D Link Document User Manual TIP e La Daily clones will be taken at every 00 00 Weekly clones will be taken every Sunday 00 00 Monthly clones will be taken the first day of the month at 00 00 Cloning Options There are three clone options described on the following Cloning Options Snapshot Space d Threshold 50 Restart the task an hour later if it failed kl Enabled Snapshot Space This setting is the ratio of the source virtual disk and snapshot space If the ratio is set to 2 it means when the clone process is starting the system will book the free RAID group space to set as the snapshot space which capacity is double the source virtual disk automatically The options are 0 5 3 Threshold The setting will be effective after enabling schedule clone The threshold will monitor the usage amount of the snapshot space When the used snapshot space achieves the threshold the system will take a snapshot and start the clone process automatically The Copyright 2014 D Link System Inc All Rights Reserved 117 D Link Clear Clone D Link Document User Manual purpose of threshold could prevent the incremental copy failure immediately when running out of the snapshot space For example the default threshold is
108. king or LACP the gigabit switch must support either trunking or LACP Otherwise the host cannot connect link with the storage device Dual Controllers The D Link storage system supports dual controllers of the same type for redundancy Controller 1 CTRL 1 is the master controller and controller 2 CTRL 2 is the slave by default CAUTION If you try to increase the system memory and are running in dual controller mode please make sure both controllers have the same DIMM on each corresponding memory slot Failing to do so will result in controller malfunction which will not be covered by warranty Be aware that when the LED of the Controller Health is in RED please DO NOT unplug the controller from the system or turn off the power suddenly This may cause unrecoverable damage which will not be covered by warranty Perform I O Please refer to the following topology and have all the connections ready To perform I O on dual controllers server host should setup MPIO MPIO policy will keep I O running and prevent fail connection with single controller failure Copyright 2014 D Link System Inc All Rights Reserved 107 D Link D Link Document User Manual iSNS server Management Recom mended RS 232 APC Smart UPS Optional Gigabit switch To DSN 6020 Net cable E uw E To DSN 6020 a RS 232 cable Console m SAS cable Ownership When creating a RAID group it will be assigned with a
109. le Firmware Update 86 JBOD Firmware Update 86 103 UPS Uninterruptible Power Supply 80 Copyright 0 2014 D Link System Inc All Rights Reserved a D Link Document User Manual V Sr D POEM RU TH 68 ALINE D ee sceiscce tact show uss 70 73 75 Change Replication Option 70 Cleanup Snapsbhots 70 73 lear HE Q 70 Eeer 69 EE ebe 69 Bari C HQ 69 Detach LUN LE 70 73 75 EE ee 69 95 IE AD UL Seeon aenesedeedecen cen seeueanaices 70 73 List EE gees 70 More Information scissa 70 Schedule TE 70 Schedule SBapsllOls 6 oot tao ndi or o iode dens 70 73 wie Ee 70 PG GP EE 69 Set Snapshot Space snccscccc2sacaccdesedsnndsnteasecderdsanasatecsvacer 70 73 Set SSD Cachinf sorea ea Traan 69 Space ReelamallOft e peo nE 70 BIOL TEE 70 TS 2 EUR TESI SNR 70 Take a snapshot 70 73 Very Pan ARRMT 69 K Ch 54 Molume COMM OUPAIOD sneinen ai 60 Volume Creation Wizafd eese 40 Volume Rebulld 1n itio e Erste teas eie 92 Voluts RTO I E 92 Volume Relationship BE 18 Volume BRestorallOn aieo re toro e toa ibac eeneg 88 EEN 89 W Web UI Web User Interface 32 155
110. ler o Check W Change Portal o Select the network ports that you would like to be available for this iSCSI node Copyright 2014 D Link System Inc All Rights Reserved 57 D Link D Link Document User Manual Change Network Portal Assign or Change LAN Portal Select the network ports that you would like to be available for this iSCSI node oe 110 0 0 1 3260 LAN 1 Use DHCP No Jumbo Frames Disabled W 10 0 0 2 3260 LAN 2 Use DHCP No Jumbo Frames Disabled 110 0 0 3 3260 LAN 3 Use DHCP No Jumbo Frames Disabled H110 0 0 4 3260 LAN 4 Use DHCP No Jumbo Frames Disabled H110 0 0 5 3260 LAN 5 Use DHCP No Jumbo Frames Disabled H110 0 0 6 3260 LAN 6 Use DHCP No Jumbo Frames Disabled o Click OK button WV gt Rename Alias Use this option to add or change iSCSI alias o Select one of the nodes from one controller o Check W gt Rename Alias o Enter the Alias Name Leave it empty to remove the alias o Click the OK button iSCSI Alias Add or change iSCSI alias To add or change the alias name enter the name below and press OK To remove an alias clear out the current name and press OK Alias Name devO ctri OK Cancel DE TIP La After setting CHAP the host initiator should be set with the same CHAP account Otherwise the host cannot connect to the volume Active Sessions The Active Session tab is used to display all currently active iSCS
111. liability than a single drive The operating system detects the RAID drive as a single storage device Copyright 2014 D Link System Inc All Rights Reserved 17 D Link a D Link Document User Manual RAID Levels There are various RAID levels with different degrees of data protection data availability and performance A description of supported RAID levels follow Type Description Min No of Drives RAID O0 Disk striping 1 RAID 1 Disk mirroring over two disks N way Extension to RAID 1 level It has N copies of the disk N mirror RAID 3 Striping with parity on the dedicated disk 3 RAID 5 Striping with interspersed parity over the member 3 disks RAID 6 2 dimensional parity protection over the member 4 disks RAID 0 1 Mirroring of the member RAID 0 volumes 4 RAID 10 Striping over the member RAID 1 volumes 4 RAID 30 Striping over the member RAID 3 volumes 6 RAID 50 Striping over the member RAID 5 volumes 6 RAID 60 Striping over the member RAID 6 volumes 8 JBOD The abbreviation of Just a Bunch Of Disks 1 Independently address a drive Volume Relationship The following graphic is the volume structure which D Link has designed It describes the relationship of RAID components LUN 1 LUN 2 LUN 3 VD 1 VD 2 VD C 23 PD 1 PD 2 PD3 DS RAM Copyright 0 2014 D Link System Inc All Rights Reserved 18 D Link a D Link Document User Manual One RG RAID group consists of a set of VDs Virtual Disk
112. ll drives in the storage system as well as any JBOD expansion arrays present This option allows the selection of the RAID type and the number of drives in each array Copyright 2 2014 D Link System Inc All Rights Reserved 38 D Link a D Link Document User Manual Ig Quick Installation Step 4 Volume Settings Enclosure Local RAID Level RAID 0 5588 GB RAID 1 1862 GB RAID 3 3725 GB RAID 5 3725 GB 6 Verify all items and then click the Finish button to complete the quick installation Copyright 2014 D Link System Inc All Rights Reserved 39 D Link D Link Document User Manual Quick Installation Step 1 System Settings System Name System Name DSN 6200 Date and Time C Change Date and Time 014 12 16 8 49 45 GMT 01 00 Brussels Copenhagen Madrid Paris 2014 v 12 160 B E 49 v 10 v Next gt Cancel The iSCSI information is only displayed when iSCSI controllers are used Use the Back button to return to a previous page to change any setting Volume Creation Wizard The Volume Creation Wizard provides a smarter policy to determine all possibilities and volume sizes in the different RAID levels that can be created using the existing free drives It provides Largest capacity for each RAID level from which to choose The fewest number of drives for each RAID level volume size This way after choosing a RAID level you may find that
113. lock size sub block size populate on read threshold and populate on write threshold Three pre defined I O types are supported they are database file system and web service The user can select an I O type to set the SSD cache of a virtual disk When SSD caching is enabled the user can also change it online But the cached data would be purged if the I O type is changed You may select the suitable I O types depending on Copyright 2 2014 D Link System Inc All Rights Reserved 134 D Link 4 D Link Document User Manual the application to get the best performance If the above three applications are not suitable the last item is customization which you may set the configurations by yourself UO Type Block Size Sub block Size Populate on Populate on Sectors Sectors Read Threshold Wrote Threshold Database 1MB 2 048 8KB 16 2 0 File System 2MB 4 096 16KB 32 2 2 Web Service 4MB 8 192 64KB 128 2 0 Customization 1MB 2MB AMB 8KB 16KB 6GAKB 20 20 The block size affects the cache use and the warm up time The cache use shows how much of the allocated cache actually holds the user data And the warm up time is the process of how long to fill the cache You can image that the highest cache use is obtained when all of the frequently reread data is located very close to other data that is frequently re read Using a larger cache block size of I O type is more useful to performance than a smaller one Conversely when frequentl
114. ly weekly daily or hourly Click OK to apply Replication Set Replication schedule Set Replication schedule ii CJ all Months in the Year 01 O 02 O 03 04 05 06 07 08 09 10 11 12 Weeks in the Month All 1 2 3 4 5 Days of the Week Al Sun Mon Tue Thu Fri Sat All 00 DI 02 03 04 05 06 07 Hours in the Day os LJ go J 10 C 11 12 13 14 15 16 17 18 19 20 21 22 23 Minutes in the Hour All DD 15 30 45 RR Wed OK TIP Daily replication will be taken every 00 00 Weekly replication will be taken every Sunday 00 00 Monthly replication will be taken the first day of every month at 00 00 Replication Options There are three Replication options described below Replication Options Snapshot Space Threshold 50 T Restart the task an hour later if it failed Enabled Copyright 2014 D Link System Inc All Rights Reserved OK Cancel 125 D Link a D Link Document User Manual Snapshot Space This setting is the ratio of the source virtual disk and snapshot space If the ratio sets to 2 it means when the replication process is starting the system will book the free RAID group space to set as the snapshot space which capacity is double the source virtual disk automatically The options are 0 5 3 Threshold The setting will be effective after enabling schedule replication The threshold will monitor the usage amount of the snapshot space When the used snapshot space achie
115. mation for the management port and iSCSI data ports If using static IP addresses please prepare a list of the static IP addresses the subnet mask and the default gateway Switches o DSN 6200 Gigabit switches recommended or Gigabit switches with VLAN LCAP Trunking optional Oo DSN 6500 Gigabit switches recommended or 10 Gigabit switches with VLAN LCAP Trunking optional CHAP security information including CHAP username and password optional For dual controller systems it is recommended that the host logon to the target twice both Controller 1 and Controller 2 and then the MPIO should setup automatically For an iSCSI dual controller system install an iSNS server on the same storage area network recommended Drive Slot Numbering The drives can be installed into any slot in the enclosure Slot numbering is reflected in Web Ul Slot 10 Slot 11 Slot 12 Copyright 2014 D Link System Inc All Rights Reserved 21 D Link a D Link Document User Manual TIP e La Install at least one drive in Slot 1 to 4 marked gray slots System event logs are saved in these drives Otherwise event logs no longer exist after a reboot System Installation and Deployment Using the following instructions to install and deploy the storage system o Install BBM Battery Backup Module The BBM module is located inside the right PSU PSU2 module Release the PSU2 latch and move to t
116. mber from the virtual disk W gt List LUNs List all of the attached logical unit numbers Take an example of taking a snapshot 1 Before taking a snapshot it must reserve some storage space for saving variant data Click Set Snapshot Space button Copyright 0 2014 D Link System Inc All Rights Reserved 73 D Link D Link Document User Manual Set Snapshot Space 0000000000000 0 0 0 0 Virtual Disk Set Snapshot Space Available 3595GB Size 30 GB Minimum 4GB Free Capacity 3565GB po E a X c Ms ow Select a Virtual Disk from the drop down list Enter a Size which will be reserved for the snapshot space Click OK The snapshot space is created Click Take a Snapshot button Use the drop down list to select a Virtual Disk Enter a Snapshot Name Click OK The snapshot is taken Show snapshots for virtual disk VD 01 V Show disk size in sl Used GB Status Health Exposure Cache Mode LUN Time Created Tue Feb 11 17 32 24 2014 9 Set quota to expose the snapshot Click W Set Quota option Set Quota Size 26 Available Space 26 GB 10 Enter a size which is reserved for the snapshot If the size is zero the exposed snapshot will be read only Otherwise the exposed snapshot can be read written and the size will be the maximum capacity for writing 11 Attach LUN to the snapshot Copyright 2 2014 D Link System Inc All Rights Reserved 7
117. n E E 122 AE EE 122 MC a E E E E E E 122 EC AIDE E 123 Schedule Replication Task oes ertet rnit ea MEAS n a tea IA I mI RUPES SERE RO Gun VEI ORA e uar uode cta 124 Bee ELON Ee EE 125 Wis CE IRE te EE 126 Clone Ee EE Oe CCA CIO Deae ttes noniencudacensarievaceceesecencantuaesaeeneqandavtnesarauienensantvanerartanenteaieadens 126 FAST i ope iaai 129 eel 129 Collis de EE 130 Sonic E 130 SSD CACHING LICENSING EEECRECHER Ee ege 130 eie EE 131 id en0 phe le e e E 131 Populating a CAC E 132 REG EE 132 Fei 134 ele MET e EE 136 Beien S NERONI T I un 137 ROBES O OT AIN cmt 138 SYSTEM BUZZER ee 138 EVENT NOTIFICATION p 138 SOFTWARE APPLICATION m e eege 148 Vulle Ze et we Inn te 148 Solem 5E El E 148 SEUD MPIO VE 149 Copyright 2014 D Link System Inc All Rights Reserved 8 D Link a D Link Document User Manual ce INA TT uu 149 Bie qa cis 150 Chapter 8 GLOSSARY AND ACRONYM LIST RE 151 Chapter 9 INDEX Gr M 153 Copyright 0 2014 D Link System Inc All Rights Reserved D Link a D Link Document User Manual Overview Product Overview This user manual describes
118. n keep working well After controller 1 is fixed or replaced the current owner of all RAID groups will be assigned back to their preferred owner Lockdown Dual controller mode The firmware of two controllers is different or the size of memory of two controllers is different In this stage only the master controller can work and I O will write through the protected data Single Single controller mode In this stage the controller must stay in slot A and MUX boards for SATA drives are not necessary The differences between single and degraded are described below There is no error message for one controller only I O will not overwrite through and there is no ownership of RAID group Change Controller Mode The operation mode can be changed from Single to Dual or vice versa Here are the procedures In System Maintenance gt Upgrade tab choose Single or Dual in the drop down list Operation Mode Dual Click the Apply button it will pop up a warning message click the OK button to confirm Recommend iSNS Server An iSNS server is recommended for helping to manage devices It s important for keeping I O running smoothly when the ownership of the RAID group is switching or one of the dual controllers fails For example without iSNS server when the controller 1 fails the running I O from host to controller 1 may fail because the host switching to a new portal is slower at that moment and as a result may cause I O time out With
119. n to start upgrading the firmware When upgrading there is a progress bar running After finished upgrading the system must reboot manually to make the new firmware take effect JBOD Firmware Update To upgrade JBOD firmware choose a JBOD first the other steps are the same as controller firmware update Controller mode This option can be modified to dual or single here If the system installs only one controller switch this mode to Single and then click Apply button Firmware Synchronization Only available in Dual controller models The Firmware Synchronization tab is used on dual controller systems to synchronize the controller firmware versions when the firmware of the master controller and the slave controller are different The firmware of the slave controller is always changed to match the firmware of the master controller It doesn t matter if the firmware version of the slave controller is newer or older than that of the master Normally the firmware versions in both controllers are the same The firmware versions are the same between the two controllers Copyright 2014 D Link System Inc All Rights Reserved 86 D Link a D Link Document User Manual If the firmware versions between two controllers are different it will display the following message Click the Apply button to synchronize The firmware versions are different between the two controllers To copy controller one s firmware to controller T
120. nents by yourself Doing so may violate your warranty and expose you to electric shock Refer all servicing to authorized service personnel Please always follow the instructions in this user s manual Tips and Cautions This manual uses the following symbols to draw attention to important safety and operational information Symbol Meaning Description Gm TIP Tips provide helpful information guidelines or suggestions p for performing tasks more effectively CAUTION Cautions indicate that failure to take a specified action could result in damage to the software or hardware Conventions The following table describes the typographic conventions used in this manual Copyright 2014 D Link System Inc All Rights Reserved 3 D Link Conventions Bold talic square brackets braces vertical bar Slash underline D Link Document User Manual Description Indicates text on a window other than the window title including menus menu options buttons fields and labels Example Click OK button Indicates a variable which is a placeholder for actual text provided by the user or system Example copy lt source file gt lt target file gt Indicates optional values Example a b indicates that you can choose a b or nothing Indicates required or expected values Example a b indicates that you must choose either a or b Indicates that you have a choice between two or more options or a
121. nk INFO INFO WARNING INFO iSCSI Events Level INFO INFO INFO Snap rollback started Snap rollback finished Snap quota reached Snap clear space Type iSCSI login accepted iSCSI login rejected iSCSI logout recvd Battery Backup Events Level INFO INFO INFO INFO INFO WARNING INFO INFO INFO JBOD Events Level INFO INFO WARNING INFO INFO Warning ERROR ERROR ERROR ERROR INFO WARNING WARNING Copyright 2014 D Link System Inc All Rights Reserved Type BBM start syncing BBM stop syncing BBM installed BBM status good BBM status charging BBM status fail BBM enabled BBM inserted BBM removed Type PD upgrade started PD upgrade finished PD upgrade failed PD freed PD inserted PD removed HDD read error HDD write error HDD error HDD IO timeout JBOD inserted JBOD removed JBOD SMART T E C a D Link Document User Manual Snapshot rollback of VD lt name gt has been started Snapshot rollback of VD lt name gt has been finished The quota assigned to snapshot lt name gt is reached The snapshot space of VD lt name gt is cleared Description iSCSI login from IP succeeds iSCSI login from lt IP gt was rejected reason lt string gt iSCSI logout from IP was received reason lt string gt Description Abnormal shutdown detected start flushing battery backed data lt number gt KB Abnormal shutdown detected flushing battery
122. not 2 iqns Ny TIP La For DSN 6200 6500 Series the maximum LUN number is 2048 Replication The Replications tab is provided to create rebuild delete or manage the replication tasks Physical Disks RAID Groups Virtual Disks Snapshots Logical Units This table shows the Task column descriptions Column Name Description No Number Source Virtual The source name of the virtual disk Disk Status The status of the task Online The task is online Missing The task is missing Ratio of the replication task Shaping Apply the number of the shaping group Speed MB Replication speed Target Virtual The target name of the virtual disk Disk Size GB or MB Total capacity of the target virtual disk Schedule The status of the schedule N A No schedule for the replication task Icon The schedule of the replication task is set Time Created The created time of the task Vendor The target of the vendor Model The target of the model Serial Number The WWN of the target virtual disk This table shows the Task Path column descriptions Column Name Description No Number Source NIC The NIC port of the source side for the replication task Target IP The IP address of the target side Target Name The iSCSI node name of the target side LUN The number of the LUN assigned State The state of the connection Copyright 2014 D Link System Inc All Rights Reser
123. nt date time and time zone settings check Change Date and Time The changes can be done manually or synchronized from an NTP Network Time Protocol server System Identification To Flash the status light on the front display for locating this system in the racks click OK button To stop Flash the status light on the front display click the OK button again When it is done click the Apply button Network Settings The Network Settings tab is used to view the MAC address and change basic network settings Copyright 2014 D Link System Inc All Rights Reserved 47 D Link a D Link Document User Manual Change Network Settings On this screen change the network settings for the administration port Enable dual management ports 00 13 78 BB 38 80 Use DHCP Use BOOTP Specify a Static IP Address IP Address 192 168 1 234 Subnet Mask 222 222 0 0 Gateway 192 168 1 254 HTTP Port HTTPS Port SSH Port EF The options available on this tab are Enable dual management ports This is for dual controller models Check it to enable dual management ports MAC Address Display the MAC address of the management port in the system IP Address The option can change IP address for remote administration usage There are three options DHCP BOOTP and Specify a Static IP Address The default setting is DHOP DNS Server Address If necessary the IP address of DNS server can be entered or
124. ntials 9 Done Disconnect Microsoft scstintiaer ZA dame Target secret D Link Document User Manual Multiple Connected Session MCS Ed RoundRobin 0 0 F 192 168 21 123 192 168 21 1 3 Connected Active 192 168 22 123 192 168 22 1 3 Connected Active 1 Select the target name click Disconnect button and then click Yes button 2 Done the iSCSI device disconnected successfully Copyright 0 2014 D Link System Inc All Rights Reserved 150 D Link 4 D Link Document User Manual Glossary and Acronym List Common Terminology Item Description RAID Redundant Array of Independent Disks There are different RAID levels with different degree of data protection data availability and performance to host environment PD The Physical Disk belongs to the member disk of one specific RAID group RG Raid Group A collection of removable media One RAID group consists of a set of virtual disks and owns one RAID level attribute VD Virtual Disk Each RAID group could be divided into several virtual disks The virtual disks from one RAID group have the same RAID level but may have different volume capacity LUN Logical Unit Number A logical unit number LUN is a unique identifier which enables it to differentiate among separate devices each one is a logical unit GUI Graphic User Interface RAID cell When creating a RAID group with a compound RAID level such as 10
125. o not have this function and will show N A in the web page Copyright 2 2014 D Link System Inc All Rights Reserved 82 D Link a D Link Document User Manual System Maintenance The System Maintenance menu accesses System Information Event Log Upgrade Firmware Synchronization This option is only visible when dual controllers are installed Reset to Factory Defaults Configuration Backup Volume Restoration and Reboot and Shutdown option tabs E Geelen Event Log Upgrade Firmware Synchronization Reset to Factory Defaults Configuration Backup Volume Restoration Reboot and Shutdown System Information The System Information tab displays system information It includes CPU Type Installed System Memory Firmware Version SAS IOC Firmware No SAS Expander Firmware No MAC SAS Address Controller Hardware No Master Controller Backplane ID JBOD MAC SAS Address Status Error Message This item is only visible when the system status is Degraded or Lockdown Replication and Thin Provisioning status This table shows the status descriptions Status Description Normal Dual controllers and JBODs are in normal stage Degraded One controller or JBOD fails or has been unplugged Lockdown The firmware of two controllers is different or the size of memory of two controllers is different Single Single controller mode The options available on this tab are Download System Information Download the system in
126. ocument User Manual System Buzzer The system buzzer features are listed below The system buzzer initiates for 1 second when system boots up successfully The system buzzer initiates continuously when an error occurs The alarm will be stopped after the error is resolved or muted The alarm will be muted automatically when the error is resolved E g when RAID 5 is degraded and alarm rings immediately user changes adds one physical disk for rebuilding When the rebuilding is done the alarm will be muted automatically Event Notifications Physical Disk Events Level Type INFO PD inserted WARNING PD removed ERROR HDD read error ERROR HDD write error ERROR HDD error ERROR HDD IO timeout INFO PD upgrade started INFO PD upgrade finished WARNING PD upgrade failed INFO PD RPS started L2L INFO PD RPS finished L2L ERROR PD RPS failed L2L Hardware Events Level Type WARNING ECC single ERROR ECC multiple INFO ECC dimm Copyright 2014 D Link System Inc All Rights Reserved Description Disk lt slot gt is inserted into system Disk lt slot gt is removed from system Disk lt slot gt read block error Disk lt slot gt write block error Disk lt slot gt is disabled Disk lt slot gt gets no response PD lt string gt starts upgrading firmware process PD lt string gt finished upgrading firmware process PD lt string gt upgrade firmware failed Assign PD lt slot gt to replace PD l
127. on with other vendors of UPS can work well but they have no such communication features with the system We support the traditional UPS via serial port and network UPS via SNMP If using the UPS with a serial port connect the system to UPS via the included cable for communication The cable plugs into the serial cable that comes with the UPS Then set up the shutdown values for when the power goes out This table shows the available options and their descriptions Copyright 2 2014 D Link System Inc All Rights Reserved 80 D Link Options UPS Type Shutdown Battery Level Shutdown Delay Seconds Shutdown UPS IP Address This option is only visible when the UPS type is Smart UPS SNMP Community This option is only visible when the UPS type is Smart UPS SNMP Status Battery level 96 D Link Document User Manual Description Select UPS Type None No UPS or other vendors Smart UPS Serial port APC UPS with serial port Smart UPS SNMP APC UPS with network function Megatec UPS Megatec UPS When below the setting level the system will shut down Setting level to 0 will disable UPS If power failure occurs and system power cannot recover after the time setting the system will shut down Setting delay to 0 will disable the function Select ON when the power is off the UPS will shut down by itself after the system shutdown is successful After the power comes
128. or Serial Number Rate Write Cache Standby Read Ahead Command Queuing e 1 1 NA NA Onine Good Free WDC WDWCAVY4158095 SATAG0GHIs Disabled Disabled Enabled Enabled E 2 Ww NA NA Onine Good Free WDC WOWCAVSAXS SATAG 0GDIS Disabled Disabled Enabled Enabled vj 3 Ab NA NA Onine Good Free NI CVWL4I4500UZ4800GN SATA SSD 6 0Gb s Enabled Disabled Enabled Enabled are This table shows the column descriptions Column Name Description Slot The position of a hard drive The button next to the slot number shows the functions that can be executed Size GB or MB Capacity of hard drive The unit can be displayed in GB or MB RAID Group RAID group name RAID Set The number of RAID Set N A The RAID group is traditional provisioning Number The RAID group is the number of RAID set to thin provisioning Virtual Disk Virtual disk name for SSD caching Status The status of the hard drive Online The hard drive is online Rebuilding The hard drive is being rebuilt Transitioning The hard drive is being migrated or is replaced by another disk when rebuilding occurs Scrubbing The hard drive is being scrubbed Health The health of the hard drive Good The hard drive is good Failed The hard drive has failed Error Alert S M A R T error alerts Read Errors The hard drive has unrecoverable read errors Usage The usage of the hard drive RAID This hard drive has been set to a RAID group
129. oup TargetVD 10 Online Optimal RAID5 R5 4 Atthis time if the source virtual disk has no snapshot space it will allocate snapshot space for clone usage automatically The size will depend on the parameter of Cloning Options Start and Stop Clone To start clone please follow the procedures 1 Select the source virtual disk and then click W Start Clone 2 Click OK button The source virtual disk will take a snapshot and then start cloning Show snapshots for virtual disk SourcevD Show disk size in GB No Name Used GB Status Health Exposure Set Snapshot Space Schedule Snapshots Take a Snapshot Cleanup Snapshots To stop cloning please follow the procedures i Select the source virtual disk and then click W gt Stop Clone 2 Click OK button to stop cloning Schedule Clone The clone job can be set by schedule such as hourly or daily Please follow the procedures 1 Select the source virtual disk and then click W Schedule Clone 2 Check the schedules that you want They can be set monthly weekly daily or hourly Click OK to apply Copyright 2 2014 D Link System Inc All Rights Reserved 116 D Link Clone Set Clone Schedule Set Clone Schedule 5ourceVD All Months in the Year io O o2 O 03 O 04 los U os U 07 U 08 oo O 10O 11 O 12 Weeks in the Month A LlaLla 15 LI all LI Sun LJ Mon L Tue L wed C Thu U rri O sat Days of the Wee
130. over allocation As the term explains itself it provides storage space by requests dynamically Thin provisioning presents more storage space to the hosts or servers connecting to the storage system than is actually available on the storage system Put it in another way Thin provisioning allocates storage space that may or may not exist The whole idea is actually another way of virtualization Virtualization is always about a logical pool of physical assets and provides better utilization over those assets Here the virtualization mechanism behind thin provisioning is a storage pool The capacity of the storage pool is shared by all volumes When write requests come in the space will be drawn dynamically from this storage pool to meet the needs Thin provisioning TN A 1 Physical Volume Available space Whole system Disks not Thin Provisioning The Benefits of Thin provisioning The benefits of Thin provisioning are described below Less disk purchase is needed initially when setting up a new storage system You don t need to buy more capacity to meet your future data growth Usually hard drive price declines as time progresses You can buy the same hard drives with cheaper price at a later time Why not save money upfront while you can No stranded storage capacity better utilization efficiency and lower total cost of ownership Thin provisioning can make full use of the stranded capacity that traditional provi
131. own automatically when the voltage or temperature is out of the normal range For better data protection it is recommended to check Auto Shutdown Copyright 2 2014 D Link System Inc All Rights Reserved 79 D Link UPS D Link Document User Manual For better protection and avoiding a single short period of high temperatures that could trigger an automatic shutdown the system will gauge if a shutdown is needed This is done using several sensors placed on key systems that the system checks every 30 seconds for present temperatures The core processor temperature limit is 80C The interface temperature limit is 65C The SAS Controller and SAS Expand or temperature limits are 65 C When one of these sensors reports a temperature above the threshold for three continuous minutes the system shuts down automatically The UPS tab is used to set up a UPS Uninterruptible Power Supply The system supports Smart UPS made by APC and Megatec series UPS Choose Smart UPS for APC products Megatec UPS for Megatec series products or none if you are using a UPS UPS Type Smart UPS SNMP Shutdown Battery Level 9 5 20 Shutdown Delay Seconds O Shutdown UPS IP address Community UPS Status UPS Battery Level Apply Currently the system only supports and communicates with Smart UPS series by APC American Power Conversion Corp http www apc com and Megatec UPS V TIP X Connecti
132. pen and no event would be sent The RAID stacks could not use optimize algorithm to compute parities of a partition which is not rebuilt Thus the performance of random write in a clean partition would be worse CAUTION The fast rebuild should not be enabled for a virtual disk whose access pattern SSD Caching licensing fee required is random write The traditional storage technology stored in the HDDs Hard Disk Drives and SSDs Solid State Drives are mainly used in mission critical applications where the speed of the storage system Copyright 2014 D Link System Inc All Rights Reserved 130 D Link a D Link Document User Manual needs to be as high as possible In recent years the capacity of HDDs has increased but their random input output I O has not increased at the same rate For some applications such as enterprise web with database cloud and virtualization which require both high capacity and performance HDDs have the superiority in capacity but lower speed It means the pure HDD storage is not enough for those applications Using the superiority of SSDs offer exceptionally high speed SSD caching technology provides the best way to fulfill cost effectively the performance and capacity requirements of their enterprise applications Integrated HDDs and SSDs into the storage combine the benefits of both SSD cache feature enables the system to use SSDs as extended cache thus increasing the performance of
133. play Rebuilding the column R in virtual disk will display the ratio in percentage After complete rebuilding the status will become Online M TIP D La The dedicated spare cannot be set if there is no RAID group or only RAID groups with RAID O or JBOD level Copyright 2014 D Link System Inc All Rights Reserved 92 D Link a D Link Document User Manual Sometimes rebuild is called recover they are the same meaning This table describes the relationship between RAID levels and recovery Operation RAID 0 RAID 1 N way mirror RAID 3 RAID 5 RAID 6 RAID 0 1 RAID 10 RAID 30 RAID 50 RAID 60 JBOD Description Disk striping No protection for data RAID group fails if any hard drive fails or is unplugged Disk mirroring over 2 disks RAID 1 allows one hard drive to fail or be unplugged You need one new hard drive to be inserted into the system for rebuild to be completed Extension to RAID 1 level It has N copies of the disk N way mirror allows N 1 hard drives to fail or be unplugged Striping with parity on the dedicated disk RAID 3 allows one hard drive to fail or be unplugged Striping with interspersed parity over the member disks RAID 5 allows one hard drive to fail or be unplugged 2 dimensional parity protection over the member disks RAID 6 allows two hard drives to fail or be unplugged If it needs to rebuild two hard drives at the same time it will rebuild the first one and t
134. pshot is the only one in the system there is no more snapshot space which can be released for incoming changes then the snapshot will fail How many snapshots can be created on a virtual disk There are up to 64 snapshots can be created per virtual disk What if the 65th snapshot has been taken There are two different situations 1 If the snapshot is configured as a schedule snapshot the latest one the 65th snapshot will replace the oldest one the first snapshot and so on 2 If the snapshot is taken manually when taking the 65th snapshot it will fail and a warning message will be shown on the Web UI Copyright 2014 D Link System Inc All Rights Reserved 114 D Link Ze D Link Document User Manual Rollback and delete snapshot When a snapshot has been rolled back the related snapshots which are earlier than it will also be removed But the remaining snapshots will be kept after rollback If a snapshot has been deleted the other snapshots which are earlier than it will also be deleted The space occupied by these snapshots will be released after deleting Clone A clone function can backup data from the source virtual disk to target Here is the clone operation At the beginning copy all data from the source virtual disk to target This is called full copy Afterwards use snapshot technology to perform the incremental copy Please be fully aware that the incremental copy needs to use snapshot to compare the data diff
135. r is detached from VD lt name gt RG name has been manually activated RG name has been manually deactivated Rewrite at LBA address of VD names starts Rewrite at LBA address of VD name completes Rewrite at LBA address of VD lt name gt failed RG lt name gt is in degraded mode VD lt name gt is in degraded mode RG lt name gt is failed VD lt name gt is failed I O failure for stripe number address in VD lt name gt Recoverable read error occurred at LBA lt address gt lt address gt of VD lt name gt Recoverable write error occurred at LBA lt address gt lt address gt of VD lt name gt Unrecoverable read error occurred at LBA lt address gt lt address gt of VD lt name gt Unrecoverable write error occurred at LBA lt address gt lt address gt of VD lt name gt Config read failed at LBA lt address gt lt address gt of PD lt slot gt Config write failed at LBA lt address gt lt address gt of PD lt slot gt Failed to change size of the global cache The global cache is ok Copyright 2014 D Link System Inc All Rights Reserved 141 D Link ERROR INFO INFO WARNING WARNING WARNING WARNING WARNING WARNING INFO INFO INFO INFO INFO INFO INFO INFO INFO INFO WARNING INFO WARNING ERROR ERROR ERROR CV boot error create global PD dedicated spare PD global spare PD read error PD write error Scrub wrong parity Scr
136. rature iSCSI NIC 1 36 0 C hyst 40 0 C high 65 0 C OK Temperature iSCSI NIC 2 36 0 C hyst 0 0 C high 65 0 C OK Temperature System Board 40 0 C hyst 5 0 C high 65 0 C OK Temperature SAS Expander 63 0 C hyst 5 0 C high 90 0 C OK Temperature Location BBM N A Not installed Backplane Type Item Value Status Voltage PSU 45V 5 07 V min 4 60 V max 5 40 V OK Voltage PSU 12V 412 08 V min 411 04 V max 41296 V OK Voltage PSU 3 3V 3 38 V min 3 04 V max 3 56 V OK Temperature Location 1 26 0 C hyst 40 0 C high 455 0 C OK Temperature Location2 29 0 C hyst 40 0 C high 55 0 C OK Temperature Location 3 26 0 C hyst 40 0 C high 455 0 C OK Temperature Location 4 25 0 C hyst 40 0 C high 55 0 C OK Temperature Location 5 26 0 C hyst 0 0 C high 55 0 C OK Temperature Location6 25 0 C hyst 0 0 C high 55 0 C OK Temperature Location 25 0 C hyst 0 0 C high 55 0 C OK Temperature Location8 25 0 C hyst 0 0 C high 55 0 C OK Power Supply PSU1 N A OK Power Supply PSU2 N A OK Cooling FAN1 3375 RPM OK Cooling FAN2 3590 RPM OK Cooling FAN3 3515 RPM OK Cooling FAN4 3515 RPM OK Auto Shutdown M If auto shutdown is enabled the system will shut down automatically when the internal power zem If Auto Shutdown is checked the system will shut d
137. re components Copyright 2014 D Link System Inc All Rights Reserved 11 D Link Ze D Link Document User Manual Front View There is a power switch by the right front handle a USB interface for a LCD screen by the left front handle Number Description 1 USB port This is designed specifically for USB LCD usage It DOES NOT offer external USB storage function 2 Access LED This indicates the host interface frontend connectivity not the hard drive activity Blink There is host interface activity data I O or management OFF There is no host interface activity 3 Status LED Red System failure Off System OK 1 2 Number Description 1 Power button and power LED Blue Power ON Off Power OFF 2 Reset button Press within 2 seconds to reset the system to default settings The default resets include Copyright 2 2014 D Link System Inc All Rights Reserved 12 D Link Ze D Link Document User Manual Management IP Address 192 168 0 32 User Name admin Password 123456 USB LCD comes as an optional device for the DSN 6200 6500 Series The standard unit doesn t include an USB LCD Both the USB port on the front left handle and the USB port on the controller itself support the LCD function However the USB port doesn t support external USB storage function Number Description 1 LCD display Up button Down button ENT Enter button ESC Escape button
138. re sensors voltage sensors hard disk status fan sensors power sensors and LED status Due to the different hardware characteristics among these sensors they have different polling intervals Below are the details of the polling time intervals Temperature sensors 1 minute Voltage sensors 1 minute Hard disk sensors 10 minutes Copyright 2014 D Link System Inc All Rights Reserved 78 D Link Document User Manual D Link Fan sensors 10 seconds When there are 3 errors consecutively the system sends an ERROR event log Power sensors 10 seconds when there are 3 errors consecutively the system sends an ERROR event log LED status 10 seconds Hardware Monitor The Hardware Monitor tab displays the information of current voltages and temperatures as well as providing an Auto shutdown option Show information for Local v Temperature Internal Case cO v Controller 1 Monitors Type Item Value Status Voltage On Board Vcore 0 99 V min 0 75 V max 1 35 V OK Voltage Onboard 3 3V 3 34 V min 3 10 V max 3 50 V OK Voltage Onboard 45V 5 00 V min 4 60 V max 5 40 V OK Voltage Onboard 12V 12 04 V min 411 04 V max 12 96 V OK Voltage On Board Vddr 1 50 V min 1 39 V max 1 60 V OK Temperature CPU Core 0 48 0 C hyst 5 0 C high 79 0 C OK Temperature CPU Core 1 46 0 C hyst 5 0 C high 79 0 C OK Tempe
139. ree at which level the redundancy is maintained MPIO creates multiple iSCSI sessions with the target storage Load balance and failover occurs between the multiple sessions MC S creates multiple connections within a single iSCSI session to manage load balance and failover Notice that iSCSI connections and sessions are different than TCP IP connections and sessions The above figures describe the difference between MPIO and MC S Here are some considerations for when a user chooses MC S or MPIO for multi path 1 If the user uses hardware iSCSI off load HBA then MPIO is the only choice 2 If the user needs to specify different load balance policies for different LUNs then MPIO should be used 3 If the user installs anyone of Windows XP Windows Vista or Windows 7 then MC S is the only option since Microsoft MPIO is supported in Windows Server editions only 4 MC S can provide higher throughput than MPIO in a Windows system but it consumes more CPU resources than MPIO Trunking and LACP Link aggregation is the technique of taking several distinct Ethernet links and making them appear as a single link It has a larger bandwidth and provides the fault tolerance ability Beside the Copyright 2 2014 D Link System Inc All Rights Reserved 105 D Link a D Link Document User Manual advantage of wide bandwidth the I O traffic remains operating until all physical links fail If any link is restored it will be added to the link
140. ree of physical damages on disks Users will take their own risk to do these procedures Reboot and Shutdown The Reboot and Shutdown function is used to reboot or shutdown the system Before powering off the system it is highly recommended to execute the Shutdown function to flush the data from cache onto the physical disks This step is important for data protection Reboot Shutdown The Reboot function has three options These are reboot both controllers controller 1 only or controller 2 only Reboot Both Controller 1 and Controller 2 Controller 1 Controller 2 OK Cancel Copyright 2 2014 D Link System Inc All Rights Reserved 89 D Link D Link Document User Manual Performance Monitor The Performance Monitor menu option accesses the Disk and iSCSI iSCSI The Disk displays the throughput and latency of the physical disk Check the slots for which disk you want to monitor Show disk for Local Iv M Slot 1 Msit2 Msit3 Msit4 Maas Msite Mao M siots Maa Msictio Misit11 Misiot12 Misiot13 Misioti4 Msictis Msiot16 Misiot17 Mlsioti8 Misioti9 Misiot20 Misiot21 Moon Msiot23 Slot24 Slot 1 Slot 3 1000 750 xs 2 SEH 2 250 0 e Throughput 21892KB E Latency 41 ms D Throughput 21732KB E Latency 1E 20000 Throughpu i Throughput BOB B B Re S E B Auen Throughput TENS a Slot 4 40000 1000 40000 40000 a 30000 750 30000 44 30000 H
141. ress Adjust Submask IP Adjust Gateway IP 31 D Link a D Link Document User Manual Apply IP Setting AYes Nov Local Phy Disk Temp Slot lt n gt lt nn gt C Local Enc Cooling FAN lt n gt Management lt nnnnn gt RPM Local Power Supply PSU lt n gt lt status gt Reset to AY N Default ad The USB LCD was developed to add more mobility and flexibility during deployment and installation In order to save costs several DSN 6200 6500 systems can share one USB LCD All the functions provided by USB LCD are the same as the original LCD introduced in the previous section Please be aware to remove the USB LCD before adding the front bezel ENT ESC MUTE CAUTION To prevent data loss when powering down the storage system it is recommended to execute Reset Shutdown Shutdown Yes to flush the data from the cache to the physical disks Web UI D Link storage systems support graphic user interface operation They support most common web browsers Be sure to connect the LAN cable to the management port of the system The default management IP address is 192 168 0 32 255 255 255 0 please configure your computer IP address at the same subnet of the system e g 192 168 1 234 255 255 255 0 And then enter the IP address into your browser to display the authentication screen e http lt P Address gt e g http 192 168 0 32 Copyright 2014 D Link System Inc All Rights Reserved 32 D Link
142. rforms a failover when the link status fails on a port W gt Set VLAN ID VLAN is a logical grouping mechanism implemented on switch device VLANs are collections of switching ports that comprise a single broadcast domain It allows network traffic to flow more efficiently within these logical subgroups Please consult your network switch user manual for VLAN setting instructions Most of the work is done at the switch part All you need to do is to make sure that your iSCSI port s VLAN ID matches that of switch port If your network environment supports VLAN you can use this function to change the configurations Fill in VLAN ID and Priority settings to enable VLAN Copyright 2 2014 D Link System Inc All Rights Reserved 53 D Link a D Link Document User Manual Set VLAN ID LAN VLAN ID VLAN ID range 2 4094 Priority 0 Priority range 0 7 OK Cancel o VLAN ID VLAN ID is a 12 bit number Its range is from 2 to 4094 while 0 1 and 4095 are reserved for special purposes o Priority The PCP Priority Code Point is a 3 bit number and reserved for QoS The definition complies with IEEE 802 1p protocol ranging from O to 7 with O as the default value In normal cases you don t need to set this value Using the default will do just fine ay TIP D La If iSCSI ports are assigned with VLAN ID before creating aggregation takes place aggregation will remove VLAN ID You need to repeat the steps to set VLAN ID
143. rguments Indicates all options or arguments Indicates the default value Example a b Copyright 2 2014 D Link System Inc All Rights Reserved 4 D Link a D Link Document User Manual Contents Chapter 0 Chapter 1 Chapter 2 Chapter 3 Me EE 3 fce TR EI 3 WEES AIO et e CT 3 KERGER 3 OVERVIEW e 10 Beie fie ga 10 Moder e ie I O DEE 10 EE 11 PARON EE 11 FIO T H 12 Disk Drive Assembly P 13 ENNER GG MUX Bodrd Umit ol NEE 14 ari m 15 RAID CONCEPTS m 17 2115187 18 VOCUS ION S AND WEE 18 KSChkseidle ET 19 SEENEN 20 INSTALLATION WE 21 IEN dee EN Bigi sme rej RE Tale iE RTT EE E OUEST 21 System Installation and Deployment EE 22 POWER ON OFF V 27 ROWS On E 550 E 27 POWER olt the SVSECM ME 28 QUICK Eege 29 IVIANAGEIVIENIT INTER FACES EE 29 i CONS ONS EES 29 Secure Shell ege 29 E E D T 30 Copyright 2014 D Link System Inc All Rights Reserved 5 D Link Chapter 4 a D Link Document User Manual e EE ER HOW 1O USE THE GUIDED e
144. rows over the threshold set in the policy the action will be taken and event log will be generated Copyright 2014 D Link System Inc All Rights Reserved 100 D Link a D Link Document User Manual Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Enabled RAID Set Free Size GB Disks Used RAID Cell Status Level Action 60 Information Take no Action 70 Information Take no Action Information Take no Action Warning Reclaim Space Waring Delete Snapshots 7 Warning De activatg RAID Group ee ae a emm I Figure 6 Capacity policy settings Automatic space reclamation to recycle unused space and increase utilization rate Automatic space reclamation will be automatically activated in RAID group initialization process or it can be set manually through capacity policy You can set as many as 16 policies When space usage ratio grows over the threshold set in the policy space reclamation will be enabled automatically in the background with the lowest priority or when the I O is low The resource impact is reduced to a minimum Modify RAID Group Policy Level Information Action Take no Action Reclaim Space Delete Snapshots De activate RAID Group Figure 7 Space reclamation Thin Provisioning Case We suggest that you apply Thin provisioning to non critical production applications first Thin provisioning works well when the data written is thin frien
145. rsa Thin provisioned snapshot space and it is writeable Copyright 2014 D Link System Inc All Rights Reserved 99 D Link D Link Document User Manual Snapshot space sits at the same RAID group of the volume that the snapshot is taken against Therefore when you expose the snapshot into a virtual disk it becomes a thin provisioned virtual disk It will only take up the just the right amount of space to store the data not the full size of the virtual disk Convert traditional virtual disk to Thin and vice versa Move all your existing fat provisioned virtual disks to thin provisioned ones Virtual disk clone function can be performed on both directions fat to thin and thin to fat depending on your application needs Figure 5 shows cloning a fat virtual disk to a thin one Name Size GB Write Priority BgRate Type Clone Schedule Clone Status Health Fat VD 1000 Thin VD 1000 first lt prev 1 next gt Select a Virtual Disk Target Name Size GB Status Health RAID RAID Group Thin VD 1000 Online Optimal RAIDO Thin RG 1 Figure 5 Clone between thin virtual disk and fat one Thin Provisioning Options The following describes the thin provisioning options Threshold settings and capacity policies These are designed to simplify the management and better monitor the storage usage You can set as many as 16 policies for each RAID group When space usage ratio g
146. rved 67 D Link a D Link Document User Manual Virtual Disks The Virtual Disks tab is provided to create modify delete or view the status of the virtual disk Use the drop down list at the top to change the drive size units MB or GB Show disk size in ce v Name Size GB SSD Caching Write Priority Bg Rate Type Clone Schedule Clone Status Health R RAID LUN Snapshot Space GB Snapshot RAID Group Gei VD 01 10 Disable WB HI 4 RAID NIA N A Online Optimal RAIDO 0 0 0 0 RO Esa VD 02 20 Database WB HI 4 RAID N A N A Online Optimal RAIDO 0 0 0 D RO 1 Creat Cloning Options This table shows the column descriptions Description Column Name Name Size GB or MB SSD Caching Virtual disk name Total capacity of the virtual disk The unit can be displayed in GB or MB The SSD caching policy Disable Disable SSD caching Database Enable SSD caching and set it as database policy File System Enable SSD caching and set it as file system policy Web Service Enable SSD caching and set it as web service policy Custom Enable SSD caching and set it as customization policy The right of virtual disk WT Write Through WB Write Back RO Read Only The priority of virtual disk HI High priority MD Middle priority LO Low priority Background task priority 4 3 2 1 0 Default value is 4 The higher the background priority of a VD is the more background I O w
147. rver optional for iSCSI environment o Start the configuration Power ON OFF Power on the System The power button is located at the right front handle To turn on the system you may press the power button once After you turn the power ON the system performs a booting process which takes a few minutes CAUTION Be aware that when Controller Health LED is in RED please DO NOT unplug the controller from the system or turn off the power suddenly This may cause unrecoverable damage which will not be covered by warranty Copyright 2014 D Link System Inc All Rights Reserved 27 D Link a D Link Document User Manual Power off the System If it becomes necessary to power down the system it is recommended using a normal controlled shutdown form through either the LCD or Web UI to ensure all data is flushed from the cache first 1 Shutdown using LCD On the LCD Power off the system using a normal shutdown o Press ENT button o Press Y down twice to show Reboot Shutdown and press ENT button o Press V down once to show Shutdown and press ENT button o Press A up once to highlight Yes and press ENT button System shutdown begins When shutdown process completes the power LED will turn off 2 Shutdown using Web UI Using the Web UI Select System Maintenance gt Reboot and Shutdown Click the Shutdown icon System shutdown begins When shutdown process completes the power LED will turn
148. s FAIL Power Supply of lt string gt in JBOD lt name gt is NORMAL Cooling fan of lt string gt in JBOD lt name gt is FAIL Cooling fan of lt string gt in JBOD lt name gt is NORMAL Voltage of lt string gt read as lt string gt in JBOD lt name gt is WARN OVER Voltage of lt string gt read as lt string gt in JBOD lt name gt is WARN UNDER Voltage of lt string gt read as lt string gt in JBOD lt name gt is CRIT OVER Voltage of lt item gt read as lt string gt in JBOD lt name gt is CRIT UNDER Voltage of lt string gt in JBOD lt string gt is NORMAL Temperature of lt string gt read as lt string gt in JBOD lt name gt is OT WARNING Temperature of lt string gt read as lt string gt in JBOD lt name gt is UT WARNING Temperature of lt string gt read as lt string gt in JBOD lt name gt is OT FAILURE Temperature of lt string gt read as lt string gt in JBOD lt name gt is UT FAILURE Temperature of lt string gt in JBOD lt name gt is NORMAL Path redundancy to JBOD lt name gt PD number is lost Assign JBOD lt name gt PD lt slot gt to replace PD lt slot gt Assign PD lt slot gt to replace JBOD lt name gt PD lt slot gt Assign JBOD lt name gt PD lt slot gt to replace JBOD lt name gt PD lt slot gt PD lt slot gt is replaced by JBOD lt name gt PD lt slot gt Copyright 2014 D Link System Inc All Rights Reserved 144 D Link INFO INFO ERROR ERROR
149. shed VD migrate failed VD scrub started VD scrub finished VD scrub aborted RG migrate started RG migrate finished RG move started RG move finished VD move started VD move finished VD move failed VD attach LUN VD detach LUN RG activated RG deactivated VD rewrite started VD rewrite finished VD rewrite failed RG degraded VD degraded RG failed VD failed VD IO fault Recoverable read error Recoverable write error Unrecoverable read error Unrecoverable write error Config read fail Config write fail CV boot error adjust global CV boot global a D Link Document User Manual Failed to complete initialization of VD lt name gt VD lt name gt starts rebuilding VD lt name gt completes rebuilding Failed to complete rebuild of VD lt name gt VD lt name gt starts migration VD lt name gt completes migration Failed to complete migration of VD lt name gt Parity checking on VD lt name gt starts Parity checking on VD lt name gt completes with lt address gt parity data inconsistency found Parity checking on VD lt name gt stops with lt address gt parity data inconsistency found RG lt name gt starts migration RG lt name gt completes migration RG lt name gt starts move RG lt name gt completes move VD lt name gt starts move VD lt name gt completes move Failed to complete move of VD lt name gt LUN number is attached to VD lt name gt LUN numbe
150. sioning can t All free capacity can be made available to other hosts A single storage system can serve more hosts and servers to achieve high consolidation ratio Thin provisioning can help you achieve the same Copyright 2014 D Link System Inc All Rights Reserved 97 D Link a D Link Document User Manual level of services with less hard drives purchased upfront which can significantly reduce your total cost of ownership Scalability storage pool can grow on demand When the storage pool RAID group has reached the threshold you set before Up to 32 RAID sets can be added to the RAID group to increase the capacity on demand without interrupting I O Each RAID set can have up to 64 physical disks Automatic space reclamation mechanism to recycle unused blocks The technology used here is called zero reclamation When a thin RG is created the initialization process will try to fill out all the storage pool space with zero This process will run in background with low priority in order not to impact the I O performance This is the reason why when there is no I O traffic from the hosts the hard drive LED will keep blinking as if there are I O activities The purpose of zero reclamation is that when the actual user data happens to have all zero in a basic allocation unit granularity the storage system will treat it as free space and recycle it Until the next time there is data update to this reclaimed all zero basic unit the
151. sk which was changed from a cloning job formerly 7 Rebuild the clone relationship select a source virtual disk Rebuild the Clone Relationship Select a Source Virtual Disk 1 Name Size GB Status RAID LUN Snapshot RAID Group SourcevD 10 Online RAIDS 1 1 R5 1 Next gt gt Cancel 8 The next steps are the same as the procedure of creating a new replication task 9 If a wrong target virtual disk is selected when rebuilding the replication task there will be an alert and the system stops the creation Copyright 2 2014 D Link System Inc All Rights Reserved 128 D Link a D Link Document User Manual Fast Rebuild When executing rebuild the Fast Rebuild feature skips any partition of the virtual disk where no write changes have occurred it will focus only on the parts that have changed This mechanism may reduce the amount of time needed for the rebuild task It also reduces the risk of RAID failure cause of reducing the time required for the RAID status from degraded mode to healthy At the same time it frees up CPU resources more quickly to be available for other I O and demands Solution Without the Fast Rebuild feature rebuild will start from the beginning partition to the end It may spend lots of time to complete the task When enabling Fast Rebuild feature it will rebuild the partition with the changes only Dirty Partition Clean Partition eae e rm rim rcs
152. slot that will support a variety of storage controllers from a variety of independent hardware vendors IHVs and system vendors 6G MUX D Link bridge board is for SATA II disk to support dual controller mode Copyright 2014 D Link System Inc All Rights Reserved 152 D Link Index a D Link Document User Manual A ENEE EE 58 Connection ietale etsgeggegregergu e stiegeng natura E eo egeeeg 59 IR et E 59 B BBM Battery Backup Module 22 EE 138 C CHAP Challenge Handshake Authentication Protocol 56 CHAP e aces pasccescsccecesssaczcedccacctuctcsetectseiaanedeatermeczetan 59 EH Cis ene 60 B ead E 60 Modify User Information eeeeeeeeeeeeerrerrr 60 llo M 115 Change Replication Optons 70 ear E EN 70 118 Cloning HEES 117 EE 118 Schedule Clone eeeeeeen 70 116 Ser En NS RR RES 70 115 PAR e 70 116 vires Ee E 70 116 Clone Options Restart the task an hour later if it failed 118 SE 117 RT ME 117 Configuration Backup ccccccccccccceeceeeeeeeeeeeeeeeeeeeeeeeeeeeees 87 E pO e 88 pOT E 88 D IK ET 90 Drive Slot Numbering eeeeeeeeeeesseseseeeeeeeeererrrs 21 Dual een 107 E Email Notification Settings eeeeeeeesessseeereerrree 49 Send Tes E E HE 49 Enclosure Manapetnent ctt ttr trt Poet bens 78 Entity and 15 SI Settings een oto eere teens SC EE
153. sole via Console UI username logout from IP or serial console via Console UI username login from IP via Web UI username logout from IP via Web UI All event logs are cleared Failed to send event to email Description RG name has been created Failed to create RG name RG name has been deleted RG name has been renamed as name VD name has been created Failed to create VD name VD name has been deleted Name of VD name has been renamed to name Cache policy of VD name has been set as read only Cache policy of VD lt name gt has been set as write back Cache policy of VD lt name gt has been set as write through Size of VD name extends VD lt name gt has been LUN attached Failed to attach LUN to VD name VD name has been detached Failed to attach LUN from bus lt number gt SCSI ID number lun number VD names starts initialization VD lt name gt completes initialization Copyright 2014 D Link System Inc All Rights Reserved 140 D Link WARNING INFO INFO WARNING INFO INFO ERROR INFO INFO INFO INFO INFO INFO INFO INFO INFO ERROR INFO INFO INFO INFO DEBUG DEBUG DEBUG WARNING WARNING ERROR ERROR ERROR DEBUG WARNING DEBUG ERROR ERROR ERROR ERROR INFO VD init failed VD rebuild started VD rebuild finished VD rebuild failed VD migrate started VD migrate fini
154. storage system can swiftly return a basic unit from the free storage pool because it s already filled with zero An eco friendly green feature that helps to reduce energy consumption Hard drive is the top power consumer in a storage system Because you can use less hard drives to achieve the same amount of work this translates directly to a huge reduction of power consumption Features Highlight The following describes the comparison between Fat and Thin provisioning Write on demand or allocate on demand This is the most distinctive function in thin provisioning You can see from the screenshots below Figure 1 shows there are two RAID groups created Fat RG is using traditional provisioning without Thin provisioning enabled and its size is 1862GB Thin RG is Thin provisioning enabled and it s size is the same Name Total GB Free Capacity GB Available Size GB Thin Provisioning Fat RG 1662 1662 1662 Disabled Thin RG 1862 1662 1662 Enabled Figure 1 No virtual disk is created Let s create a Virtual Disk on each RAID group with the same size of 1000GB respectively in Figure 2 and see what happens Copyright 2014 D Link System Inc All Rights Reserved 98 D Link a D Link Document User Manual Name Size GB Write Priority Bg Rate Type Clone Fat VD 1000 WE HI 4 RAID N A Thin VD 1000 WB HI 4 RAID N A Figure 2 Virtual disks are created In Figure 3 the free space of Fat RG immedia
155. t slot gt PD lt slot gt is replaced by PD lt slot gt Failed to replace PD lt slot gt with PD lt slot gt Description Single bit ECC error is detected at lt address gt Multi bit ECC error is detected at lt address gt ECC memory is installed 138 D Link INFO INFO ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR ERROR INFO INFO INFO INFO INFO INFO EMS Events Level INFO ERROR INFO ERROR WARNING INFO ERROR INFO ERROR ERROR WARNING ERROR ERROR ERROR WARNING WARNING ERROR Copyright 2014 D Link System Inc All Rights Reserved ECC none SCSI bus reset SCSI host error SATA enable device fail SATA EDMA mem fail SATA remap mem fail SATA PRD mem fail SATA revision id fail SATA set reg fail SATA init fail SATA diag fail Mode ID fail SATA chip count error SAS port reply error SAS unknown port reply error FC port reply error FC unknown port reply error Port linkup Port linkdown Type Power install Power absent Power restore Power fail Power detect Fan restore Fan fail Fan install Fan not present Fan over speed Thermal level 1 Thermal level 2 Thermal level 2 shutdown Thermal level 2 CTR shutdown Thermal ignore value Voltage level 1 Voltage level 2 a D Link Document User Manual Non ECC memory is installed Received SCSI Bus Reset event at the SCSI Bus lt number gt SCSI Host allocation failed Failed to enable
156. te modify delete or view the status of the RAID groups Use the drop down list at the top to change the drive size units MB or GB Select the traditional RAID group the following will be displayed Show RAID size in GB v Name Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Number of Virtual Disk Status Health RAID Current Controller Preferred Controller v RO 1862 1862 1862 Disabled 1 0 Online Good RAIDO Controller 1 Controller 1 v R1 1862 1862 1862 Enabled 2 0 Online Good RAID 1 Controller 1 Controller 1 This table shows the column descriptions Column Name Description Name RAID group name Total GB or Total capacity of the RAID group The unit can be displayed in GB or MB MB Free Capacity Free capacity of the RAID group The unit can be displayed in GB or MB GB or MB Available Size Available capacity of the RAID group The unit can be displayed in GB or GB or MB MB Thin Provisioning The status of Thin provisioning Disabled Enabled Disks Uses The number of physical disks in the RAID group Number of The number of virtual disks in the RAID group Virtual Disk Status The status of the RAID group Online the RAID group is online Offline the RAID group is offline Copyright 2014 D Link System Inc All Rights Reserved 63 D Link a D Link Document User Manual Rebuilding the RAID group is being rebuilt Migrating the RAID
157. tely reduces to 862GB 1000GB is taken away by the virtual disk However the free space of Thin RG is still 1862GB even though the same sized virtual disk is created from the RAID group Nothing is written to the virtual disk yet so no space is allocated The remaining 1862GB can be used to create other virtual disks This is storage efficiency Name Total GB Free Capacity GB Available Size GB Thin Provisioning Fat RG 1662 G62 ob Disabled Thin RG 1862 1862 1862 Enabled Figure 3 Write on demand Expand capacity on demand without downtime Extra RAID set can be added to the thin RAID group to increase the size of free storage pool A thin RAID group can have up to 32 RAID sets with each RAID set containing up to 64 physical hard drives The maximum size of each RAID set is 64TB Figure 4 shows that Thin RG consists of two RAID sets Show RAID size in GB Name Total GB Free Capacity GB Available Size GB Thin Provisioning Disks Used Y Fat RG 1662 ob ob2 Disabled 1 Y Thin RG 3724 3724 3724 Enabled 2 No Total Size GB Free Size GB Disks Used RAID Cell Status Msc ee oe A No NE 1862 1862 1 1 nine 1862 I d 1 Online P d Figure 4 Scalable RAID group size Allocation unit granularity is 1GB This is a number that demands careful balance between efficiency and performance The smaller it is the better the efficiency and the worse the performance becomes and vice ve
158. the SATA pci device Failed to allocate memory for SATA EDMA Failed to remap SATA memory io space Failed to init SATA PRD memory manager Failed to get SATA revision id Failed to set SATA register Core failed to initialize the SATA adapter SATA Adapter diagnostics failed SATA Mode ID failed SATA Chip count error SAS HBA port lt number gt reply terminated abnormally SAS frontend reply terminated abnormally FC HBA port number reply terminated abnormally FC frontend reply terminated abnormally The Port lt number gt link status is changed to Up The Port lt number gt link status is changed to Down Description Power lt string gt is installed Power lt string gt is absent Power lt string gt is restored to work Power lt string gt is not functioning PSU signal detection lt string gt Fan lt string gt is restored to work Fan lt string gt is not functioning Fan lt string gt is installed Fan lt string gt is not present Fan lt string gt is over speed System temperature lt string gt is higher System Overheated lt string gt System Overheated lt string gt The system will auto shutdown immediately The controller will auto shutdown immediately reason Overheated lt string gt Unable to update thermal value on lt string gt System voltage lt string gt is higher lower System voltages lt string gt failed 139 D Link ERROR ERROR INFO WARNING ERROR ERROR WA
159. tory Defaults cccccceeseseeseeesessessseseeeees 87 COSI oreet E enn ne amen ee 102 S S M A R T Self Monitoring Analysis and Reporting dis rs IMC HOY DEE 82 SAS Serial Attached SCSI esses 20 BAS E 20 Serial C Omole cetera estt um EE EEA 29 SES SCSI Enclosure Services 81 D F lt e EE 81 EE 81 SEET eebe 72 110 E Eeer 70 73 75 Cleanup Snapsbhots 70 73 111 EEN 113 IT 73 RETTEN 70 73 75 TES BC 70 73 154 D Link List Snapshots cccccccccccsccceccccceecceeeceeeceeeeeeeeeseeseeeeeees 70 allge 73 112 Schedule Snapshots eee eese 70 73 112 er d pl CE 73 Set Snapshot Space esssseeeeeeeeees 70 73 Take a e EE 70 73 110 OF i EE 73 jS PA Bore ario eee ee teeta m 130 OMT OUP AD eege ege gege 136 Eege 137 I Ne 134 Eeer 131 Populating the Cache 132 Read Write Cache Cases ccccccccccccccccccceeeeeeeeeeeeeeeess 132 Eed 131 DOE SECU C5 MGI eyen E 29 System EERSTEN eege eebe 46 System InfOFmaltlOf E 82 Download System Information sssssss 83 System Installation and Deployment 27 hysterm Mia ae TT 82 SA EE 47 Date add KE 47 System IdentilicallOH ee 47 e IN EE 47 T Thin Provisioning cccccccccccccccccccececeeceeeceeeeeeeeeeeeeeeeeeeeeeeees 96 Tonka CENTRE 53 106 U Une ee eU reU Iun 85 Controller Mode 86 109 Controller Modu
160. ub data recovered Scrub recovered data Scrub parity recovered PD freed RG imported RG restored VD restored PD scrub started Disk scrub finished Large RG created Weak RG created RG size shrunk VD erase finished VD erase failed VD erase started RG disk missing PD VD read write fault PD IO retry fault PD substitute L2L Snapshot Events Level WARNING WARNING WARNING INFO INFO INFO INFO Copyright 2014 D Link System Inc All Rights Reserved Type Snap mem Snap space overflow Snap threshold Snap delete Snap auto delete Snap take Snap set space a D Link Document User Manual Failed to create the global cache Assign PD lt slot gt to be the dedicated spare disk of RG lt name gt Assign PD lt slot gt to Global Spare Disks Read error occurred at LBA lt address gt lt address gt of PD lt slot gt Write error occurred at LBA lt address gt lt address gt of PD lt slot gt The parity data inconsistency is found at LBA lt address gt lt address gt when checking parity on VD lt name gt The data at LBA lt address gt lt address gt is recovered when checking parity on VD lt name gt A recoverable read error occurred at LBA lt address gt lt address gt when checking parity on VD lt name gt The parity at LBA lt address gt lt address gt is regenerated when checking parity on VD lt name gt PD lt slot gt has been freed from RG lt name gt
161. up ownership to the other controller WV gt Change RAID Options Change the RAID property options o Write Cache v Enabled When the write cache is enabled data transfer operations are written to fast cache memory instead of being written directly to disk This may improve performance but will also increase the risk of losing data when losing power if there is no BBM protection v Disabled Disable disk write cache Default Copyright 0 2014 D Link System Inc All Rights Reserved 64 D Link a D Link Document User Manual o Standby v Disabled Disable auto spin down Default Y 30 sec 1 min 5 min 30 min The hard drives will be spun down for power saving when the disk is idle for the period of time specified o Read Ahead v Enabled The system will discern what data will be needed next based on what was just retrieved form disk and then preload this data into the disks buffer This feature will improve performance when the data being retrieved is sequential Default v Disabled Disable disk read ahead o Command Queuing v Enabled Sends multiple commands at once to a disk to improve performance Default Y Disabled Disable disk command queuing WV gt Add RAID Set Add RAID sets for the thin provisioning RAID group Y gt Add Policy Add policy for the thin provisioning RAID group WV gt More information Display RAID group s information Select the thin provisioning RAID group it will
162. ure Self Monitoring Analysis and Reporting Technology S M A R T Below is the current S M A R T information for the drives attached to this device S M A R T provides users with an opportunity to take action before possible drive failure Show information for Local sl Temperature Internal Case C Slot HDD Rate Media Wea Reallocated Sec Erase Fail Unexpected Pc Uncorrectable Temperatur Read Error Spin Up Time Seek Error4R Spin Up Ret Calibration Re 1 SATA 6 0Gb s N A 200 140 N A N A N A N A 200 51 177 21 200 0 100 0 100 0 2 SATA 6 0Gb s N A 200 140 N A N A N A N A 200 51 161 21 200 0 100 0 100 0 3 SATA 6 0Gb s N A 200 140 N A N A N A N A 200 51 166 21 200 0 100 0 100 0 S M A R T measures many attributes of the active hard drives and inspects the properties of those hard drives that are close to being out of acceptable tolerance levels The advanced notice of possible hard drive failure can allow users to back up the hard drive or replace the hard drive This is much better than having a hard drive crash when it is writing data or rebuilding a failed hard drive This tool displays S M A R T information of hard drives The number is the current value the number in parenthesis is the threshold value The threshold values from different hard drive vendors are different Please refer to the hard drive vendors specification for details S M A R T only supports SATA drives SAS drives d
163. ved 77 D Link a D Link Document User Manual Connected The replication task pair is connected Reconnecting The source is reconnecting to the target The options available on this tab are Create Create a replication task Rebuild Rebuild the replication task which is changed from a cloning job Replication Options Set replication options Shaping Setting Configuration Set task shaping configurations The following options are available after creating a replication task in the Task table W gt Start Start the replication task W gt Stop Stop the replication task W gt Set Task Shaping Set task shaping group W gt Add Path Add multi path for the replication task W gt Schedule Set the replication task by schedule W gt Delete Delete the replication task The following options are available after creating a replication task in the Task Path table W gt Add Connection Add a connection to the replication task W gt Delete Connection Delete the connection for the replication task WV gt Delete Delete a multi path of the replication task Described in detail in chapter 5 Enclosure Management The Enclosure Management menu option is for accessing the Hardware Monitor UPS SES and S M A R T option tabs Hardware Monitor UPS SES SMART For the enclosure management there are many sensors for different purposes such as temperatu
164. version of the system 2 is newer 2 All physical disks of the RAID group should be moved from system 1 to system 2 together The configuration of both RAID group and virtual disk will be kept but LUN configuration will be cleared in order to avoid conflict with the current setting of the system 2 JBOD Expansion D Link storage space can be expanded by adding JBOD expansion system Connecting JBOD D Link storage systems support expansion systems with SAS connections When connecting to an expansion system it will be displayed at the Show disk for drop down list in Volume Configuration Physical Disks tab For example Local JBOD 1 DSN 6020 etc Local means disks in local controller JOBD 1 means disks in JBOD 1 controller and so on Copyright 0 2014 D Link System Inc All Rights Reserved 102 D Link a D Link Document User Manual In Enclosure Management gt Hardware monitor tab select the enclosure at the Show information for drop down list it can display the hardware status of SAS JBODs In Enclosure Management gt S M A R T tab select the enclosure at the Show information for drop down list it can display the SMART information of the disks in JBODs SAS JBOD expansion has some constraints as described below 1 Users can create RAID groups among multiple chassis The maximum number of disks in a single RAID group is 32 2 Local spare disks can support the RAID groups that are located in the loc
165. ves the threshold the system will take a snapshot and start the replication process automatically The purpose of the threshold is to prevent incremental copy failure immediately when running out of snapshot space For example the default threshold is 50 The system will check the snapshot space every hour When the used snapshot space is over 50 the system will start the replication job automatically and then continue monitoring the snapshot space When the rest snapshot space has been used 50 in other words the total used snapshot space is around 75 the system will start the replication task again Restart the task an hour later if failed The setting will be effective after enabling schedule replication When running out of the snapshot space the virtual disk replication process will be stopped because there is no more available snapshot space If this option is checked the system will clear the snapshots of replication in order to release snapshot space automatically and the replication task will be restarted after an hour This task will start a full copy CAUTION The default snapshot space allocated by the system is two times the size of the source virtual disk That is the best value of our suggestion If the user sets the snapshot space manually and lower than the default value the user should be aware that if the snapshot space is not enough the replication task will fail Delete Replication Task To delete the repli
166. wing o Stripe Size KB The options are 4KB 8KB 16KB 32KB and 64KB The default value is 64KB o Block Size Bytes The options are 512 to 65536 The default value is 512 bytes o Cache Mode The options are Write through Cache and Write back Cache The default value is Write back Cache o Priority The options are High Medium and Low Priority The default value is High priority o Bg Rate Background task priority The higher number the background priority of a virtual disk has the more background I O will be scheduled to execute The options are O to 4 The default value is 4 o Read Ahead The system will discern what data will be needed next based on what was just retrieved form disk and then preload this data into the disks buffer This feature will improve performance when the data being retrieved is sequential The default value is Enabled o AV Media Mode Optimize for video editing The default value is Disabled o Erase This option is available when the RAID group is not thin provisioning This option will wipe out old data in the virtual disk to prevent OS from recognizing the old Copyright 2014 D Link System Inc All Rights Reserved 71 D Link a D Link Document User Manual partition The options are Do Not Erase erase First 1GB or Full Disk The default value is Don Not Erase o Space Reclaim This option is available when the RAID group is thin provisioning The default value is Enabled o Fast Rebuild T
167. wo click the Apply button below x TIP X This tab is only visible when the dual controllers are installed A single controller system does not have this option Reset to Factory Defaults The Reset to factory defaults tab allows users to reset the system configurations back to the factory default settings Click the Reset button below to reset the system to the factory defaults Reset The default values are Management IP Address 192 168 0 32 User Name admin Password 123456 Configuration Backup The Configuration Backup is used to either save system configuration export or apply a saved configuration import Import or Export Import File Apply While the volume configuration settings are available for exporting to prevent conflicts and overwriting existing data they cannot be imported Copyright 2014 D Link System Inc All Rights Reserved 87 D Link D Link Document User Manual The options available on this tab are Import Import all system configurations excluding volume configuration Export Export all configurations to a file CAUTION Import option will import all system configurations excluding volume configuration and the current system configurations will be replaced Volume Restoration The Volume Restoration can restore the volume configuration from the volume creation history It is used for RAID group corrupt and tries to recreate the volume
168. y reread data is located far from other data that is frequently reread the lowest cache use is obtained In this case the lowest cache block size of I O type allows the most user data to be cached The sub block size affects the cache warm up time too A larger sub block size causes a cache to fill more quickly than a smaller one but it can also affect the response time of host I O Also resources occupying the system such as CPU utilization memory bandwidth or channel utilization A very high locality of reference can be more useful from a larger sub block size than from a smaller one especially if those blocks that are reread frequently reside in the same sub block This occurs when one I O causes the sub block to be populated and another I O in the same sub block gets a cache hit These are tradeoffs depending on the applications Users may set them by experience to get the best performance Here we provide a formula which can calculate the estimated warm up time We define that T Warm up time seconds required I Best random IOPS of HDD S I O Size D Number of HDDs C Total SSD caching capacity P Populate on read or Populate on write threshold We assume that random read write from HDD to achieve the capacity of SSD should be Copyright 2014 D Link System Inc All Rights Reserved 135 D Link D Link Document User Manual C P I S D T So we can estimate the warm up time at least
169. zed BA R5 RAID5 VD 02 50 3 Local 1 2 3 2014 02 11 17 03 08 CST The virtual disk is created Ex R5 RAID5 VD 01 30 d Local 1 2 3 2014 02 11 17 02 45 CST The snapshot space has initialized ma R5 RAID5 VD 01 30 3 Local 1 2 3 2014 02 11 17 00 04 CST The virtual disk is created E QUICK13645 RAID5 QUICK21222 3725 3 Local 3 2 1 2014 02 11 14 46 51 CST The virtual disk is created 1 2 3 4 5 6 7 8 next gt last gt gt m m m This table shows the column descriptions Column Name Description RAID Group Name RAID Virtual Disk Volume Size GB Disks Used Disk slot Time Copyright 0 2014 D Link System Inc All Rights Reserved The original RAID group name The original RAID level The original virtual disk name The original capacity of the virtual disk The original physical disk number of the RAID group The original physical disk location The last action time of the virtual disk 88 D Link a D Link Document User Manual Event Log The last event of the virtual disk The options available on this tab are Restore Restore the virtual disk of the RAID group TIP Be e La When trying to do data recovery the same volume configurations as the original must be set and all member disks must be installed by the same sequence as original or else data recovery will fail CAUTION The data recovery does not guarantee that the lost data can be restored 100 It depends on the real operation and the deg

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