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Fujitsu MAG3091FC User's Manual

1. 2 2 Environmental power requirements eese nennen nennen enne neret 2 4 Zone layout and track capacity MAF3364FC 3 3 Zone layout and track capacity MAG series sese 3 3 Format diee REP EUR ICH a RGB 3 9 Surface temperature check point eene 4 7 Motor Statt 10d i tete es eii e ated ete east dete eae tee eR 5 3 Selt di enostic functions oe one odiada 6 1 FC SCA connector CNY eer B IRR B 2 and MAG series model names and product numbers eee C 2 Fibre channel interface function specifications sss D 2 C141 E078 02EN XV This page is intentionally left blank 1 GENERAL DESCRIPTION 1 4 Standard Features 1 2 Hardware Structure 1 3 System Configuration This chapter describes the feature and configuration of the intelligent disk drives IDD MAF3364FC and MAG series intelligent disk drives IDDs are high performance large capacity 3 5 inch fixed disk drives with an embedded fibre channel controller The interface between the MAF3364FC MAG series intelligent disk drives and host system conforms to the fibre channel PLDA standard NCITS TR 19 FIBRE CHANNEL PRIVATE LOOP SCSI DIRECT ATTACH FC PLDA which covers from the fibre channel physical layer to SCSI command protocol A combination of the high transfer speed and long distance transf
2. UJITSU NORDIC ung Hans Vag 12 S 192 68 Sollentura SWEDEN EL 46 8 626 6000 AX 46 8 626 6711 2 FUJITSU ITALIA S p A Via Nazario Sauro 38 20099 Sesto S Giovanni MI ITALY TEL 39 2 26294 FAX 39 2 26294 201 FUJITSU FRANCE S A Place des Etas Unis SILIC 310 94588 Rungis Cedex FRANCE TEL 33 1 41 80 38 80 FAX 33 1 41 80 38 66 FUJITSU ICL ESPANA S A Almagro 40 28010 Madrid SPAIN TEL 34 91 681 8100 FAX 34 91 681 8125 UJITSU AUSTRALIA LIMITED Julius Avenue Cnr Delhi Road North Ryde N S W 2113 STRALIA ep 2 97 76 4555 2 97 76 4556 gt 2 lt 1 FUJITSU HONG KONG LTD 10 F Lincoln House 979 King s Road Taikoo Place Island East o EL 852 2827 5780 AX 852 2827 4724 UJITSU KOREA LTD oryo Finance Center Bldg 23 6 YoulDo Dong oung DungPo Gu Seoul Republic of KOREA EL 82 2 3787 6000 82 2 3787 6070 om 4 UJITSU COMPUTERS SINGAPORE PTE LTD 0 Science Park Road 03 01 ELETECH PARK SINGAPORE SCIENCE PARK II ingapore 117674 EL 65 777 6577 AX 65 771 5499 N 0 JITSU TAIWAN LTD Hun Tai Center 168 170 Tun Hwa North Road Sec Taipei TAIWAN L 886 2 545 7700 A 886 2 717 4644 gt gt JITSU SYSTEMS BUSINESS MALAYSIA SDN BHD jitsu Plaza 1A Jalan Tandang 204 P O Box 636 Pejabat Pos Sultan 770 Petaling Jaya Selangor Darul E
3. A AA D 2 C141 E078 02EN Table D 1 channel interface function specifications 2 of 8 O Provided Not provided Command Group 0 EVPD Enable Vital Product Data Typical INQUIRY data VPD Page 0 O 64 byte long VPD page code listing VPD Page 80 Device serial number VPD Page C0 Operation mode READ DEVICE CHARACTERISTICS VU 13 x PRIORITY RESERVE VU 14 x MODE SELECT 15 PF page format O Specified value ignored Page 1 Read write error recovery O 12 B Savable AWRE Automatic Write Reallocation Enabled X Specified value ignored ARRE Automatic Read Reallocation Enabled O Changeable TB Transfer Block O Changeable RC Read Continuous EER Enable Early Recovery PER Post Error DTE Disable Transfer on Error O Changeable X Specified value ignored O Changeable DCR Disable Correction Retry count at read Correctable bit length Head offset count Data strobe offset count Retry count at write Recovery processing time restriction Page 2 Disconnection reconnection Buffer full ratio Buffer empty ratio Bus inactivity restriction Disconnection time restriction Connection time restriction Maximum burst length DTDC data transfer disconnect control EMDP Enable Modify Data Pointer FARd FAWrt FAStat Tair Arbitoration READ Write Status DImm Disconnect Immediate Fujitsu specific function C141 E078 02EN
4. eee 3 13 Alternate block allocation by REASSIGN BLOCKS 3 14 External dimensions 364 rennen ener nnns 4 2 External dimensions MAG series esses 4 3 IDD rientation ete e tte Rott e tat ect RT 4 4 Mounties frame Structute noeh ep li PS 4 5 Limitation of side mounting eee nennen tenen neret en nennen 4 6 Surface temperature measurement points nere nre enne enne nennen 4 7 Service clearance red sot not rdi no p t E 4 8 Air pressure adjustment hole 4 0 Current waveform P12 V DC etes e e E DO ER EO ERE ERN GERE EINEN TER sieved 4 10 AC noise filter recommended rennen 4 11 Connector location of SCA2 type interface model esee 4 11 SCA2 type interface Connector pode de ede E ERE Red 4 12 Checking the IDD connection A ccoooooccnnoncccnononcnonnononnnncnnnnnnnconnnnnnnnnnnnnn cnn enne rennen 5 7 Checking the IDD connection B nene enne enne 5 8 Revision daba 6 7 Indicating revision numbers nennen nnne enne 6 8 Locations Of connectors mec dete teen tette tetro ees te tete tate tn Ta Re teet A 2 C141 E078 02EN 2 1 2 2 3 1 3 2 3 3 41 5 1 6 1 B 1 1 D 1 TABLES page Function specifications eene E
5. W Ir PE 1 TITTETTTTITIETEIL 40 tel ng EP ru 1 in m ESD contact Figure 4 12 SCA2 type interface connector 4 3 3 Recommended components for connection MAF3364FC Interface connector Connector 787317 1 AMP MAG series CN1 4 12 C141 E078 02EN 5 INSTALLATION Notes on Handling Drives Setting Mounting Drives Confirming Operations after Installation and Preparation for Use Dismounting Drive This chapter describes the notes on handling drives connections setting switches and plugs mounting drives connecting cables confirming drive operations after installation and preparation for use and dismounting drives 5 1 1 2 Notes on Handling Drives General notes a b Do not give the drive shocks or vibrations exceeding the value defined in the standard because it may cause critical damage to the drive Especially be careful when unpacking Do not leave the drive in a dirty or contaminated environment Since static discharge may destroy the CMOS semiconductors in the drive note the following after unpacking e Usean antistatic mat and body grounding when handling the drive e Hold the DE when handling the drive Do not touch PCAs except for setting Unpackaging a b d Use a flat work area Check that the This Side Up sign side is up Handle the package on soft material such as a rubber mat not on
6. A 1 A 1 Locations Of Connectors re E ee eee eet eet Plenus A 2 APPENDIX B CONNECTOR SIGNAL ALLOCATION e eeeeee esee en neenon netos ss tna ann B 1 B 1 Interface FC SCA Connector Signal Allocation essen B 2 APPENDIX MODEL NAMES AND PRODUCT NUMBERS 66 C 1 1 Model Names and Product C 2 APPENDIX D FIBRE CHANNEL INTERFACE FUNCTIONS sccssscsssecsssecssseosseeees D 1 D 1 Fibre Channel Interface Function Specifications eese nennen D 2 xii C141 E0782EN GL 1 Glossary Abbreviations AB 1 C141 E078 02EN xiii 1 1 1 2 1 3 14 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 4 12 5 1 5 2 6 1 6 2 A l xiv FIGURES page MAF3364FC vI amp w eet tr eerie E E neces EEE E E 1 5 MAG series Outer VIC Wis ister does dan cialis dida is i e Eo in 1 5 Disk h ad configuration storov sihra o citer ttp eee ette ed 1 6 FC AL system conf AAA TE 1 8 Cylinder configurations issis einen de piede tette o Ede a n a raa 3 2 Spare rea im cylinders 3535 AR eli da 3 5 A A O 3 5 Track tomate tito 3 6 Track skew cylind r rai 3 7 Sector format ize ne da A E re Pa ek SEES reri voe PERDE ante Ne PARE Te ed ATE epe 3 7 Alternate block allocation by FORMAT UNIT command
7. Table B 1 FC SCA connector CN1 Pin No Pin No EN bypass port A 12V charge 0 Pinno o os os 06 or os o N NJN RIO G G G G N Active LED Spindle sync D D D NIN ON 02 03 04 05 06 07 08 09 10 N pw us N N Uo N Start_1 Mated Start_2 Mated EN bypass port B 12 SEL 6 DSK WR 18 SELS DSK RD SELA ENCL 157 SEL DG 16 Fault LED out SEL 2 D 2 17 SEL pa 3T 18 SEL 0 DO 38 5 charge 40 Note 1 Signal names in the right column of the table are those in parallel ESI operation N R w a g w B 2 C141 E078 02EN APPENDIX C MODEL NAMES AND PRODUCT NUMBERS C 1 Model Names and Product Numbers This appendix lists model names types and product numbers C141 E078 02EN C C 1 Model Names and Product Numbers Table C 1 Total storage capacity user area 36 4 GB Data block length at factory shipment 512B Model name type MAF3364FC MAG3182FC 512B 18 2 GB MAG3091FC 512B 9 1 GB MAF and MAG series model names and product numbers Mounting screw CA01776 B980 1 6 inch height 10 025 rpm 10 disks 19 heads 6 32UNC 1 inch height 10 025 rpm 5 disks 10 heads 6 32UNC CA01776 B580 CA01776 B380 1 inch height 10 025 rpm 3 disks 5 heads 6 32UNC C141 E078 02EN APPE
8. 1 2 1 Error rate Errors detected during initialization and replaced by alternate block assignments are not included in the error rate Data blocks to be accessed should be distributed over the disk medium equally Unrecoverable error rate Errors which cannot be recovered within 63 retries and ECC correction should not exceed 10 per 10 bits Positioning error rate Positioning errors which can be recovered by one retry should be 10 or less per 10 seeks Reliability Mean Time Between Failures MTBF MTBF of the IDD during its life time is 1 000 000 hours operating 24 hours day 7 days week average DE surface temperature 40 C or less Note The MTBF is defined as Operating time hours at all field sites MTBF The number of equipment failures 1 from all field sites Failure of the equipment means failure that requires repair adjustments or replacement Mishandling by the operator failures due to bad environmental conditions power trouble host system trouble cable failures or other failures not caused by the equipment are not considered C141 E078 02EN 2 5 2 3 4 Mean Time To Repair MTTR MTTR is the average time taken by a well trained service mechanic to diagnose and repair a drive malfunction The drive is designed for a MTTR of 30 minutes or less Service life The service life is depending on the environment temperature Therefore the user must design the system cabin
9. 2 2 C141 E078 02EN MAG3364FC Seek Time 12 Seek Time ms 0 L 0 2000 4000 6000 8000 10000 12000 Seek Difference MAG series Seek Time 12 10 Seek Time ms o 4 2 0 L L L 0 2000 4000 6000 8000 10000 12000 Seek Difference 4 The start time is the time from power on or start command to when the IDD is ready and stop time is the time for disks to completely stop from power off or stop command 5 This value indicates at ready mode C141 E078 02EN 2 3 2 1 3 Environmental specifications Table 2 2 lists environmental and power requirements Table2 2 Environmental power requirements e Temperature CT Packaged inside of a week 5 to 90 RH Packaged 3 1 mm 5 to 20Hz SG 20 to 250Hz or less SEU p iesu M Power Ready Average 0 95 A 0 65 A requirements Spin up Seek 2 5 A Max 2 5 A Max Input power 5 Peak within 100 us 3 2A 3 0A at spin up 5 Random W R m m about 80 IOPS Ripple 6 5 V 250 mVp p 12 V 250 mVp p 1 For detail condition see Section 4 1 2 Vibration applied to the drive is measured at near the mounting screw hole on the DE base as much as possible 3 At random seek write read and default on retry setting with log sweep vibration 4 At power off state after installation 5 Input voltages are specified at the connector 6 High frequency noise is less than 250 mVp p 2 4 C141 E078 02EN
10. SEARCH BLOCK LOW VU 1 22 READ CAPACITY PMI Parial Medium Indicator READ EXTENDED WRITE EXTENDED SEEK EXTENDED WRITE amp VERIFY BytChk Byte Check VERIFY By Chk Byte Check SEARCH DATA HIGH SEARCH DATA LOW SET LIMITS PRE FETCH SYNCHRONIZE CACHE LOCK UNLOCK CACHE Fujitsu specific function C141 E078 02EN 25 28 2A 2B 2E 2F 30 31 32 33 34 35 36 ignored Table D 1 channel interface function specifications 7 of 8 O Provided Not provided Specification READ DEFECT DATA Block address format Byte distance from index format Physical sector address format WRITE BUFFER Mode 000 Mode 001 Command Mode 010 Group 1 Mode 100 Mode 101 Mode 000 Mode 001 Mode 010 Mode 011 READ LONG Header amp Data Mode Header amp Data Mode with Address Data Mode Download Microcode Download Microcode and Save Header amp Data Mode Header amp Data Mode with Address Data Mode Descriptor Mode CORRCT Corrected CHANGE DEFINITION LBdata Logical Block Data PBdata Physical Block Data LOG SELECT 4C x MODE SELECTEXTENDED RESERVE EXTENDED l o RESERVE EXTENDED MODE SENSE EXTENDED GA DIAGNOSTIC WRITE DATA x DIAGNOSTICREADDATA x FORMAT ID o x SPACE ID amp READ DATA ED CO x
11. eene 2 1 2 1 1 Model name and part number nman a a a a a a a aes 2 1 2 1 2 Function specifications iiie cete eere eee aku E EEE T E EE E RES 2 2 2 1 3 Environmental specifications eii deeem ir ee e eo E eo eere Eee pis 2 4 PE MM Su eric End 2 5 2 15 EA iuit nlt ie RUE RU DERE Ee 2 5 CHAPTER3 DATA FORMAT reser eere seen seen seen seen aetas sens 3 1 3 1 Data SpaCecun testis teet mette ten tet ide b dr 3 1 Cylinder configuration chino A 3 1 3 1 2 Alternate Spate Ted ii E aria eee 3 4 3 1 3 Traci a el a do 3 5 ITA Sector toman eter ebat 3 7 3 1 9 lt oen dern IE EIU 3 9 3 2 Logical Data Block Addressing eese nene nennen nennen 3 10 3 3 SAA t tti dee eds 3 11 33 1 il 3 11 3 3 2 Alternate block allocation ied e ipea De e ERA 3 11 4 INSTALLATION REQUIREMENTS eeeeeeeee etes netten 4 1 4 1 Mounting Requirements dnce REESE E E 4 1 41 1 External MENS mii A mavens marae 4 1 4 12 Mounting necne mni deti Po etd tos a ie ia 4 4 4 L3 Notes on mounting uiri it Pei pet rere ete EENE OKE etes eet ipud 4 4 4 2 Power sSupply Requiremernits aet e n eodeni 4 10 4 3 Connection Requirements ooococnonncnonccnonanonnnncnonccnonnnnonanonnn nono non nennen 4 11 NN 4 11 C141 E078 02EN xi 4 3 2 Interface COMNECION dd dd ed 4
12. the saved value of parameters described in this section is not affected 4 When the IDD to which the saving operation has been executed on a system is connected to another system the user must pay attention to that the IDD operates according to the saved parameter value if the saving operation is not executed at installation 5 The saved value of the MODE SELECT parameter is assumed as the initial value of each parameter after the power on the RESET condition or the BUS DEVICE RESET message The INIT can change the parameter value temporary actively at any timing by issuing the MODE SELECT or MODE SELECT EXTENDED command with specifying 0 to the SP bit in the CDB C141 E078 02EN 5 11 1 5 12 Error recovery parameter The following parameters are used to control operations such as IDD internal error recovery a Read write error recovery parameters page code 1 ARRE TB EER PER DCR Parameter Automatic alternate block allocation at read operation Uncorrectable data transfer to the INIT Immediate correction of correctable error Report of recovered error Suppression of ECC error correction Retry count at read operation Retry count at write operation b Verify error recovery parameters page code 7 ERR PER DTE DCR Parameter Immediate correction of recoverable error Report of recovered error Stop of command processing at successful error recovery Suppr
13. 4 939 5 989 6 919 7 499 7 979 9 149 9 865 Byte track 241 779 229 631 218 894 211 976 206 169 191 474 176 273 Sector track 377 360 340 330 320 300 273 Remarks sector track capacities are expressed in values when the logical data block is 512 bytes long 1 User space The user space is a storage area for user data The data format on the user space the length of data block and the number of data blocks can be specified with the MODE SELECT or MODE SELECT EXTENDED command C141 E078 02EN 3 3 2 3 The default number of cylinders in the user space is 10 200 for MAF3364FC and 9 866 for MAG series The user however can select the number of cylinders to be allocated in the user space by specifying 10 200 for MAF3364FC and 9 866 for MAG series as the maximum and the number of alternate cylinders as the minimum The user can also specify the number of logical data blocks to be placed in the user space with the MODE SELECT or MODE SELECT EXTENDED command When the number of logical data blocks is specified as many cylinders as required to place the specified data blocks are allocated in the user space A number starting with 0 is assigned to each cylinder required in the user space in ascending order If the number does not reach 10 200 MAF3364FC and 9 866 MAG series the rest of the cylinders will not be used Always one alternate cylinders can be established in the user space Alternate cylinders will be used f
14. DISPLACED ID VU 1 C8 ER READ ID x Fujitsu specific function C141 E078 02EN Table D 1 channel interface function specifications 8 of 8 O Provided Not provided DIAGNOSTICREADID x Command WRITE RAM VUCDOD x Group6 READRAM oy RECOVERDATA EDO VU 1 DA Defective sector slip processing function Command link function Relative block addressing function Untagged queuing function Tagged command queuing function Contingent Allegiance CA Extended Contingent Allegiance ECA Command Asynchronous condition notification feature Processing AEN async event notification Read ahead cache feature Cache control feature DPO disable page out FUA force unit access Sense data Extended format O 48 bytes long CCS common command set conformity O Rev 4 b Fujitsu specific function C141 E078 02EN This page is intentionally left blank Bus condition Bus phase CCS CDB Command Disconnect Initiator Logical unit LUN Message Reconnect SCSI SCSI device SCSI ID Sense code Glossary Asynchronous condition for causing SCSI bus status transition There are two types of bus conditions ATTENTION and RESET An SCSI bus state The SCSI bus is in one of the following phases BUS FREE ARBITRATION SELECTION RESELECTION INFORMATION TRANSFER The INFORMATION TRANSFER phase is divided i
15. Physical device address used to identify an SCSI device on the SCSI bus This number is specific to each SCSI device SCSI IDs are 0 to 7 each referenced by a unique bit on the data bus One byte of code added to the sense data to identify the type of detected error C141 E078 02EN GL 1 Sense data Sense key Status Target GL 2 Detailed information created by the target when any error is involved in the command termination status This information is transferred to report the error Four bit code added to the sense data to identify the class of detected error One byte of information that is transferred from a target to an initiator on termination of each command to indicate the command termination status SCSI device which performs I O initiated by an initiator It is abbreviated as TARG C141 E078 02EN AEN ALT ARRE ASCII ASG ATN AWG AWRE bpi BSY BytChk C list C D CCS CDB CE CmpLst CRC CSS CYL D list DBD DC DCR DCRT DE DEF DevOfl DPO DPRY DSP DTDC ACKnowledge Abbreviations DTE Asynchoronous Event Notification ALTernated block Automatic Read Reallocation Enabled American Standard Code for Information Interchange ASiGned block ATTeNtion American Wire Gauge Automatic Write Reallocation Enabled bits per inch BuSY Byte Check Target Certification list Control data Common command set Common descriptor block Customer Engineer Comp
16. Sector 0 1 2 3 4 5 6 7 8 n 1 Track 0 LBAO 1 2 3 4 5 6 7 8 n 1 Track skew Cylinder 1 2n 2 2n 1 n n 1 n 2 n 3 n 4 n 5 n 6 2n 3 Track skew 2 3n 4 3n 3 3n 2 3n 1 2n 2n 1 2n 2 2n 3 2n 4 n Cylinder skew gt 1 A Leading logical LBA Logical data block address sector in cylinder p 1 Figure 3 5 Track skew cylinder skew The number of physical sectors track skew factor and cylinder skew factor corresponding to the skew time varies depending on the logical data block length because the track skew and the cylinder skew are managed for individual sectors The IDD automatically determines appropriate values for the track skew factor and the cylinder skew factor according to the specified logical data block length The value can be read out by the MODE SENSE or MODE SENSE EXTENDED command after the track has been formatted 3 1 4 Sector format Each sector on the track consists of an ID field a data field and a gap field which separates them Figure 3 6 and Table 3 3 gives sector format examples TRNGI 2 SCT a l a LBA DATA BCRC ECC SCT PLO TR TR Hr E PAD PAD Gi Synd NG 1 NG 1 4 Sees TAE TRNG1 TRNG2 TRNG1 TRNG2 DATA SCT SBI SB2 DATA 1 Servo SBl SB2 2 BCRC ECC SCT iG ila 1 xe dica G1 Sync NG NG 112 G1 Sync 113 Gl 8 bytes PLO Sync 17 bytes TRNGI SBI 5 bytes TRNG2 SB2 6 bytes PAD 1 7 byte
17. analyze the sense data and retry recovery for a recoverable error Refer to Chapter 5 of Fibre Channel Interface Specifications for further details b Check the setting of the terminals Note that the checking procedure of loop connection differs depending on the setting of the motor start mode and unit attention report mode Formatting Since the disk drive is formatted with a specific default data format for each model part number when shipped from the factory the disk need not be formatted initialized when it is installed in the system However when the system needs data attributes different from the default format all sides of the disk must be formatted initialized according to the procedures below The user can change the following data attributes at initialization e Logical data block length e Number of logical data blocks or number of cylinders in the user space e Alternate spare area size This section outlines the formatting at installation Refer to Chapters 4 and 6 of Fibre Channel Interface Specifications for further details MODE SELECT MODE SELECT EXTENDED command Specify the format attributes on the disk with the MODE SELECT or MODE SELECT EXTENDED command The parameters are as follows a Block descriptor Specify the size byte length of the logical data block in the data block length field To explicitly specify the number of logical data blocks specify the number in the number of data blocks fi
18. Cylinder Cylinder P MAF3364FC 10400 MAG series 10066 Spare sectors on the last track in each cylinder are not necessarily placed at the end of the track because of a track skew or a cylinder skew Details are explained in Subsection 3 1 3 Figure 3 1 Cylinder configuration Apart from the above logical configuration the IDD intends to increase the storage capacity by dividing all cylinders into several zones and changing a recording density of each zone Tables 3 1 and 3 2 show the zone layout and the track capacity 3 2 C141 E078 02EN Table 3 1 Zone layout and track capacity MAF3364FC a Cylinder 0 to 899 900 to 2 000 to 3 020to 3 730to 4 030to 4 670 to 1 999 3 019 3 729 4 029 4 669 5 189 Byte track 267 428 267 428 267 428 260 017 256 665 249 755 244 019 Sector track 420 420 405 400 390 380 Tome ICI 5 Cylinder 5 190 to 5 460 to 6 460 to 7 370 to 7 930 to 8 400 to 9 520 to 5 459 6 459 7 369 7 929 8 399 9 519 10 199 Byte track 240 931 229 596 218 471 211 617 205 757 191 178 181 401 Sector track 376 360 340 330 320 300 281 Remarks sector track capacities are expressed in values when the logical data block is 512 bytes long Table 3 2 Zone layout and track capacity MAG series LARA Rares eae ara a vo eae ERE a 1 559 2 409 3 139 3 469 4 119 4 659 Sector track 420 Cylinder 4 660 to 4 940 to 5 990 to 6 920 to 7 500 to 7 980 to 9 150 to
19. Date when the error occurred e System configuration e Environmental conditions temperature humidity and voltage Error history Error contents Outline of inconvenience Issued commands and specified parameters Sense data Other error analysis information 44 CAUTION Data loss Save data stored on the disk drive before requesting repair Fujitsu does not assume responsibility if data is destroyed during servicing or repair C141 E078 02EN 6 2 2 1 2 See Section 5 1 for notes on packing and handling when returning the disk drive Revision numbers The revision number of the disk drive is represented with a letter and a number indicated on the revision label attached to the DE Figure 6 1 shows the revision label format O DL M 200000000E770001 MODEL MAG3 82FC ID JW SCA2 FC AL PART NO CADITT6 B580 SER 0 80000001 DATE 1999 06 1eV 1 204 37a 45V 1 604 MADE IN PHILIPPINES o REV NO 3 458789 Machine revision C4U98380000001 t WARNING WARRANTY VOID ANY SEAL LABEL OR cw REMOVED OF FOULOWNG US PATENT a A C sE Ni24 E en E FUJITSU LIMITED Figure 6 1 Revision label Indicating revision number at factory shipment When the disk drive is shipped from the factory the revision number is indicated by deleting numbers in the corresponding letter line up to the corresponding number with see Figure 6 2 Changing revision number in
20. IDD to operate by using the parameter value set by the user when power is turned on again When the system has more than one INIT different parameter value can be set for each INIT C141 E078 02EN When the parameters are not set or saved with the MODE SELECT MODE SELECT EXTENDED command the IDD sets the default values for parameters and operates when power is turned on or after reset Although the IDD operations are assured with the default values the operations are not always optimal for the system To obtain the best performance set the parameters in consideration of the system requirements specific to the user This section outlines the parameter setting procedures Refer to Chapter 4 of Fibre Channel Interface Specifications for further details of the MODE SELECT and MODE SELECT EXTENDED commands and specifying the parameters IMPORTANT 1 At factory shipment of the IDD the saving operation for the MODE SELECT parameter is not executed So if the user does not set parameters the IDD operates according to the default value of each parameter 2 The model select parameter is not saved for each SCSI ID of but as the common parameter for all IDs In the multi INIT System parameter setting cannot be changed for each INIT 3 Once parameters are saved the saved value is effective as long as next saving operation is executed from the INIT For example even if the initialization of the disk is performed by the FORMAT UNIT command
21. Response class 4 Maximum Likelihood Read Continuous Read Cache Disable Request Relative Humidity ReMovaBle ReSeT ReSer Ved Serial Number Synchronized Byte data area Synchronized Byte identifier area Small Computer System Interface SeCTor SELect Self Test Signal Ground Save Page SPaRe block Servo Soft SECtor SToP Format SURFace TB TPI TRM U UnitOfl V VCM VPD VU WCE WP C141 E078 02EN Transfer Block Tracks Per Inch TeRMinator Unit Offline Voice Coil Motor Vital Product Data Vendor Unique Width Write Cache Enable Write Protect This page is intentionally left blank Comments concerning this manual can be directed to one of the following addresses FUJITSU LIMITED Business Planning Solid Square East Tower 580 Horikawa cho Saiwai ku Kawasaki 210 0913 Japan TEL 81 44 540 4056 FAX 81 44 540 4123 UJITSU COMPUTER PRODUCTS OF AMERICA INC 904 Orchard Parkway San Jose alifornia 95134 2009 U S A EL 1 408 432 6333 AX 1 408 432 3908 n30Nmn UJITSU CANADA INC 800 Matheson Blvd East Mississauga Toronto ntario L4W 4X5 CANADA EL 1 905 602 5454 AX 1 905 602 5457 UJITSU EUROPE LIMITED Longwalk Road Stockley Park Uxbridge iddlesex UB11 1AB ENGLAND TEL 44 81 573 4444 FAX 44 81 573 2643 No UJITSU DEUTSCHLAND GmbH rankfurter Ring 211 80807 M nchen GERMANY EL 49 89 323780 AX 49 89 32378100
22. Specifications for details of specifications on these commands The logical data block is allocated to the next physically continued sectors after the above sector slip treatment is made On the other hand the logical data block is allocated to spare sectors which are not physically consecutive to the adjacent logical data blocks If a command which processes several logical data blocks is specified the IDD processes those blocks in ascending order of logical data block Alternate block allocation during FORMAT UNIT command execution When the FORMAT UNIT command is specified the allocation of the alternate block to those defective sectors included in the specified lists P G or D is continued until all spare sectors in the same cylinder are used up When they are used up unused spare sectors in the alternate cylinder are allocated to the subsequent sectors in the cylinder by means of alternate sector treatment Figure 3 7 is examples of the alternate block allocation during the FORMAT UNIT command execution C141 E078 02EN Example 1 Example 2 n represents a logical data block number Defective sector 1 Unused spare sector Figure 3 7 Alternate block allocation by FORMAT UNIT command If the data block verifying operation certification is not permitted DCRT flag 0 in the FORMAT UNIT command the IDD checks all initialized logic
23. command at 20 second intervals to start the spindle motors For details of this command specification refer to SCSI Logical Interface Specifications For details of this command see Chapter 4 Command Specification of the Fibre Channel Interface Specification b Turn on the 12 VDC power in the power supply unit at 20 second intervals to start the spindle motors sequentially 4 10 C141 E078 02EN 5 Noise filter To eliminate AC line noise a noise filter should be installed at the AC input terminal on the IDD power supply unit The specification of this noise filter is as follows e Attenuation 40 dB or more at 10 MHz e Circuit construction T configuration as shown in Figure 4 10 is recommended Input C O Output Figure 4 10 AC noise filter recommended 4 3 Connection Requirements 4 3 1 Connector Figure 4 11 shows the locations of connector on the interface model Interface connector Figure 4 11 Connector location of SCA2 type interface model C141 E078 02EN 4 11 4 3 2 Interface connector The connector for the fibre channel loop bus is an unshielded SCA 2 connector conforming to SCSI 3 type which has two 20 pin rows spaced 1 27 mm 0 05 inch apart Figure 4 12 shows the fibre channel connector See Section C 5 in Appendix C for signal assignments on the connector For details on the physical electrical requirements of the interface signals refer to Sections 1 Interface Specifications
24. disk drives IDD drives or devices in this manual Note 1 Model names M AF 3 182 FC Interface types FC Fibre channel Formatted capacity 100 MB units Disk size 3 3 inch Type AF Full height 10 025 rpm AG 1 inch height 10 025 rpm Note 2 Type model name MAF3364 MAF3364FC MAG3182 MAG3182FC MAG3091 MAG3091FC C141 E078 02EN vii SAFETY PRECAUTIONS List of Important Precautions This manual includes the following important precautions A CAUTION Indicates that either minor or moderate personal injury may occur or may cause damages to this product itself or property of other users if the user does not perform the procedure correctly Work division Assembly installation Precaution Damage to drive A hole or screw portion as shown in Figure 4 8 is used for adjusting air pressure balance between inside and outside the DE Do not fill with a seal or label Seals on the DE prevent the DE inside from the dust Do not damage or peel off labels Damage 1 When dismounting the drive which is mounted on the system while power is supplied to it The drive to be dismounted must be separated from the loop Dismounting the drive which is not separated from the loop may cause an unexpected error If the drive is not separated from the loop issue an LPB to the drive from the initiator in a primitive sequence of the order set It is recommended to stop the spindle motor prior
25. end physically because of track skew or cylinder skew Details are explained on Subsection 3 1 3 Size can be specified by the MODE SELECT or MODE SELECT EXTENDED command The number of spare sectors per cylinder can be specified exceeding 32 The default number of spare sectors per cylinder is 20 for the MAF3364FC and MAG3182FC and 12 for the MAG3091FC Track 0 Sector 0 1 Track 1 n 0 t a t Last track SPRI SPRm 1 SPRm Spare sectors m sectors Figure 3 2 Spare area in cylinders An alternate cylinder is used when spare sectors in a cylinder are used up or 0 is specified as the number of spare sectors in a cylinder Several cylinders at the end of the user space are allocated as alternate cylinders as shown in Figure 3 3 The number of alternate cylinder is 1 The user space and the CE space share the alternate cylinders lt User spare Cylinder 0 1 2 p 1 USRCYLO ALTCYL USRCYL User area _ m ALTCYL Alternate area Alternate cylinder Figure 3 3 Alternate cylinder Track format Physical sector allocation Figure 3 4 shows the allocation of the physical sectors in a track The length in bytes of each physical sector and the number of sectors per track vary depending on the logical data block length The unused area G4 exists at the end of the track in formats with most logical data block lengths C141 E078 02EN 3 5 2 The interval of the sector pulse length of the
26. hard material such as a desk Be careful not to give excess pressure to the internal unit when removing cushions Be careful not to give excess pressure to the PCAs and interface connector when removing the drive from the antistatic bag Do not remove the sealing label or cover of the DE and screws C141 E078 02EN 5 1 3 4 5 6 Installation a b When mounting dismounting the drive make sure the vibration and shock requirements of 2 1 3 Environmental Specification are met When removing the spindle motor from the system without stopping it while power is on pay special attention to shock in particular until the disk drive completely stops running about 30 seconds Packaging a b Store the drive in an antistatic vinyl bag with a desiccant silica gel It is recommended to use the same cushions and packages as those at delivery If those at delivery cannot be used use a package with shock absorption so that the drive is free from direct shocks In this case fully protect the PCAs and interface connector so that they are not damaged Indicate This Side Up and Handle With Care on the outside of the package so that it is not turned over Delivery a b When delivering the drive provide packaging and do not turn it over Minimize the delivery distance after unpacking and avoid shocks and vibrations with cushions For the carrying direction at delivery use one of the mount
27. in the case of setting so that motor starts at powering on a b When power is turned on the IDD executes initial self diagnosis If an error is detected in initial self diagnosis the Fault LED lights up Remark The spindle motor may or may not start rotating in this stage When the IDD status is idle the Active LED remains off the LED lights up when the initiator accesses the IDD Initial operation in the case of setting so that motor starts with START STOP UNIT command a b d When power is turned on IDD executes initial self diagnosis If an error is detected in initial self diagnosis the Fault LED lights up The spindle motor does not start rotating until the START STOP UNIT command for the start is issued The INIT needs to issue the START STOP UNIT command to start the spindle motor by the procedure in Subsection 5 6 2 The disk drive enters the READY status in 30 seconds after the START STOP UNIT command is issued At this time the IDD reads system information from the system space on the disk The active LED blinks during command execution Check items at illegal operation a b Check that IDD are mounted correctly Check that power and voltages are supplied correctly measure them with the IDD power connection position When the Fault LED continues lighting up indicates that an error is detected in initial self diagnosis In this case it is reco
28. it is possible to change it to a format different from the one set at the time of shipment by performing reinitialization on the installed system C141 E078 02EN 2 1 2 1 3 Function specifications Table 2 1 shows the function specifications of the IDD Table 2 1 Function specifications MAF3364 MAG3182 MAG3091 Formatted capacity device 1 Unformatted capacity device 45 6 GB 23 0 GB 11 5 GB Number of disks p nml ur 19 5 3 Number of heads 10 5 Number of cylinders 2 10 200 9 866 Formatted capacity track 143 872 to 215 040 139 776 to 215 040 Number of rotations rpm 10 025 0 5 Average latency me Seek time 3 Minimum 0 7 ms Read 0 7 ms Read Read Write 0 9 ms Write 1 1 ms Write 5 7 ms Read 5 2 ms Read 6 2 ms Write 5 8 ms Write 12 0 ms Read 11 0 ms Read 13 0 ms Write 12 0 ms Write Recording mode 16 17 EPRAML Recording density 283 000 bpi 275 000 bpi Track density 13 500 TPI Data transfer rate SCSI 2 ANSI X3T9 2 86 109 Rev 10h command support SCSI 3 command partial support Fujitsu specific command 1 The formatted capacity can be changed by changing the logical block length and using spare sector space See Chapter 3 for the further information 2 The number of user cylinders indicates the max and includes the alternate cylinder The number of user cylinders and alternate cylinders can be specified at format of the IDD 3 The seek time is as follows
29. may cause an unexpected error e If the drive is not separated from the loop issue an LPB to the drive from the initiator in a primitive sequence of the order set e It is recommended to stop the spindle motor prior to this loop separation operation The spindle motor can be stopped by a START STOP command It takes about 30 seconds for the spindle motor to stop completely e Then dismount the drive using the drive mounting dismounting mechanism etc of the system If the drive is dismounted while the spindle motor is running special care is required to avoid excessive vibration or shock to the drive It is recommended to stop the operation once the SCA connector breaks off contact and wait until the spindle motor stops about 30 seconds before dismount the drive e When storing or transporting the drive put it in an antistatic bag Shown in Section 5 1 2 When dismounting the drive which is mounted on the system while power is not supplied to it e Do not move the drive until the drive stops completely about 30 seconds if the spindle motor was stopped by a START STOP UNIT command and about 30 seconds after powering off when the power was simply turned off e Then dismount the drive using the drive mounting dismounting mechanism etc of the system e When storing or transporting the drive put it in an antistatic bag Shown in Section 5 1 C141 E078 02EN 5 15 This page is intentionally left blank 6 D
30. once a Error recovery during self diagnostics During the self diagnostics specified by the SEND DIAGNOSTIC command when the recoverable error is detected during the seek or the write read test the IDD performs the error recovery according to the MODE SELECT parameter value read write error recovery parameter additional error recovery parameter which the INIT specifies at the time of issuing the SEND DIAGNOSTIC command Operation of self diagnostics The self diagnostics continues when the error is recovered The self diagnostics terminates normally so far as the unrecoverable error is not detected The self diagnostics continues when the error is recovered If the unrecoverable error is not detected the consecutive tests are executed till last test but the self diagnostics terminates with error The error information indicates that of the last recovered error b Reporting result of self diagnostics and error indication When all specified self diagnostics terminate normally the IDD posts the GOOD status for the SEND DIAGNOSTIC command C141 E078 02EN 6 3 When an error is detected in the self diagnostics IDD terminates the SEND DIAGNOSTIC command with the CHECK CONDITION status If an error is detected by a hardware function test at this time the Fault LED lights up The INIT should issue the REQUEST SENSE command when the CHECK CONDITION status is posted The sense data collected by the REQUEST SENSE command indic
31. to this loop separation operation The spindle motor can be stopped by a START STOP command It takes about 30 seconds for the spindle motor to stop completely Then dismount the drive using the drive mounting dismounting mechanism etc of the system If the drive is dismounted while the spindle motor is running special care is required to avoid excessive vibration or shock to the drive It is recommended to stop the operation once the SCA connector breaks off contact and wait until the spindle motor stops about 30 seconds before dismount the drive When storing or transporting the drive put it in an antistatic bag Shown in Section 5 1 2 When dismounting the drive which is mounted on the system while power is not supplied to it Do not move the drive until the drive stops completely about 30 seconds if the spindle motor was stopped by a START STOP UNIT command and about 30 seconds after powering off when the power was simply turned off Then dismount the drive using the drive mounting dismounting mechanism etc of the system When storing or transporting the drive put it in an antistatic bag Shown in Section 5 1 C141 E078 02EN Page 4 8 Work division Precaution Page Data loss When the SEND DIAGNOSTIC command terminates with the CHECK 6 4 CONDITION status the INIT must collect the error information using the REQUEST SENSE command The RECEIVE DIAGNOSTIC RESULTS command cannot read out the error info
32. 02EN 3 15 This page is intentionally left blank 4 INSTALLATION REQUIREMENTS 4 1 Mounting Requirements 4 2 Power Supply Requirements 4 3 Connection Requirements This chapter describes the environmental mounting power supply and connection requirements 4 1 Mounting Requirements 4 1 1 External dimensions Figures 4 1 and 4 2 show the external dimensions of the IDD and the positions of the holes for the IDD mounting screws Note Dimensions are in mm C141 E078 02EN 4 1 41 310 5 10 46 32UNC m 41 28 0 5 44 45 0 2 MIO LJ E x 1 Figure 4 1 External dimensions MAF3364FC 2 C141 E078 02EN 190 6 32UNC 44 45t0 2 Figure 4 2 External dimensions MAG series C141 E078 02EN 146 010 5 4 1 2 Mounting The permissible orientations of the IDD are shown in Figure 4 3 and the tolerance of the angle is 5 from the horizontal plane a Horizontal 1 b Horizontal 2 Direction of gravity d Vertical 2 e Upright mounting 1 f Upright mounting 2 Figure 4 3 IDD orientation 41 3 Notes on mounting 1 Mounting frame structure Special attention must be given to mount the IDD disk enclosure DE as follows 4 4 C141 E078 02EN a Use the frame with an embossed structure or the like Mount the IDD with making gap of 2 5 mm or more between the IDD and the frame of the system b As shown in Fig
33. 1 2 2 2 3 A 3 5 3 4 4 4 gt 5 5 6 6 7 Ay D eo 2 12 8 13 9 14 15 5 16 17 18 am No Figure 1 3 Disk head configuration Spindle motor The disks are rotated by a direct drive hall less DC motor The motor speed is controlled by a feedback circuit using the counter electromotive current to precisely maintain the speed at 0 5 of the specified speed C141 E078 02EN 4 5 6 7 Actuator The actuator which uses a rotary voice coil motor VCM consumes little power and generates little heat The head assembly at the end of the actuator arm is controlled and positioned via feedback of servo information in the data The actuator positions heads on the CCS zone over the disk and is locked by the mechanical lock when the power is off or the spindle motor is stopped Air circulation recirculation filter breather filter The heads disks and actuator are hermetically sealed inside a disk enclosure DE to keep out dust and other pollutants The DE has a closed loop air recirculation system Using the movement of the rotating disks air is continuously cycled through a filter This filter will trap any dust generated inside the enclosure and keep the air inside the DE contaminant free To prevent negative pressure in the vicinity of the spindle when the disks begin rotating a breather filter is attached The breather filter also equalizes the internal air pressure with the at
34. 12 4 3 3 Recommended components for connection ener ener 4 12 CHAPTERS INSTALLATION eeeeeee eene tassa seen ann 5 1 5 1 Notes orn Handling Drives uA ia ea i pio bd 5 1 5 2 MEE 5 3 5 2 1 Loop ID Sto eed ep edo deem 5 3 5 2 2 Mod settinBs oe Dente ndi eR treni e 5 3 5 3 Mounting A E ELE e trad pati 5 4 HI Mount procedures s iret ete ert riti itte rpg oust it sop er ota p Pep eeose 5 4 5 4 Confirming Operations after Installation and Preparation for Use 5 5 5 4 1 Confirming initial operations cesses eene 5 5 SA2 Checking connections s aiken siti hie Bl e nb tet e ei el 5 6 35 435 entier en tei ote teet tu E D eee Ur ak teet be 5 9 Ade Setting parameters sawed ee ERI cn le et eile tte hd 5 10 3 5 Dismo rting a 5 15 CHAPTER6 DIAGNOSTICS AND MAINTENANCE occccncoonncconncoonanoonanoonanonnnnconancocnnncnnanonos 6 1 6 1 eter ia 6 1 Selbdiagnostucsss o ioter etie aeter ts 6 1 6 1 2 Test prOPrams u one e bonded 6 4 6 2 Maintenance Information 2 ed ir 6 5 6 2 1 Maintenarce requirements nono en reco e PR rte Pe PED SE PR ERE Fere iet 6 5 6 2 2 REVISION A et poteet eet re ipie egt Ep eg egt ret gp ertt pede gen 6 7 APPENDIX LOCATIONS OF CONNECTORS e eeeeeee
35. 2 Determine the parameters in consideration of how the system accesses the disk When the access form is not determined uniquely because of the processing method the parameters can be re set actively 3 For sequential access the effective access rate can be increased by enabling Read Ahead caching operations and Write Cache feature 4 Control mode parameters The following parameters are used to control the tagged queuing and error logging a Control mode parameters Parameter Default value RLEC Specification of operation when cumulative 0 Does not value parameter reaches maximum value 0 report error Queue algorithm modifier 0 Ordering is executed by read command only QErr Resume or abort remaining suspended 0 After release commandis after sense pending state of sense retention 5 14 Status executes queued command C141 E078 02EN Dismounting Drive Since the method and procedure for dismounting the disk drive for replacement of the drive etc depends on the locker structure of the system etc the work procedure must be determined in consideration of the requirements specific to the system This section describes the general procedure and notes on dismounting the drive ACAUTION Damage 1 When dismounting the drive which is mounted on the system while power is supplied to it e The drive to be dismounted must be separated from the loop Dismounting the drive which is not separated from the loop
36. 3 6 is written in this field This field contains the processing time necessary to process next sector continuously This field have rotational speed variation C141 E078 02EN 3 1 5 Format capacity The size of the usable area for storing user data on the IDD format capacity varies according to the logical data block or the size of the spare sector area Table 3 3 lists examples of the format capacity when the typical logical data block length and the default spare area are used The following is the general formula to calculate the format capacity Number of sectors of each zone number of sectors per track x number of tracks heads number of alternate spare sectors per cylinder x number of cylinders in the zone Formatted capacity total of sectors of all zones number of sectors per track in last zone number of tracks heads x number of alternate cylinders number of physical sectors in logical block x logical data block length The following formula must be used when the number of logical data blocks are specified with the parameter in the MODE SELECT or MODE SELECT EXTENDED command Format capacity logical data block length x number of logical data blocks The logical data block length the maximum logical block address and the number of the logical data blocks can be read out by a READ CAPACITY MODE SENSE or MODE SENSE EXTENDED command after initializing the disk medium Table 3 3 Format
37. AM Command WRITE RAM Command Proceed to the Copyright Page C141 E078 02EN 111 Related Standards Specifications and functions of products covered by this manual comply with the following standards Standard Text No NCITS TR 19 ANSI X3 230 1994 ANSI X3 297 1996 ANSI X3 272 199X ANSI X3 269 199X FIBRE CHANNEL PRIVATE LOOP American National SCSI DIRECT ATTACH FC PLDA Standards Institute ANSI FIBRE CHANNEL PHYSICAL AND American National SIGNALING INTERFACE FC PH Standards Institute ANSI FIBRE CHANNEL PHYSICAL AND American National SIGNALING INTERFACE 2 FC PH 2 Standards Institute ANSI FIBRE CHANNEL ARBITRATED American National LOOP FC AL Standards Institute ANSI FIBRE CHANNEL PROTOCOL FOR American National SCSI SCSI FCP Standards Institute ANSI All Right Reserved Copyright 2000 Fujitsu Limited iv C141 E078 02EN PREFACE This manual describes the MAF3364FC MAG3182FC and MAG3091FC hereafter MAG series series 3 5 inch fixed disk drives with an embedded fibre channel controller This manual details the specifications and functions of the above disk drive and gives the requirements and procedures for installing it into a host computer system This manual is written for users who have a basic understanding of fixed disk drives and their use in computer systems The MANUAL ORGANIZATION section describes organization and scope of this manual Chapter 1 GENERAL DESC
38. E in the field because it is completely sealed Service life The service life under suitable conditions and treatment is as follows The service life is depending on the environment temperature Therefore the user must design the system cabinet so that the average DE surface temperature is as possible as low e DE surface temperature 45 or less 5 years e DE surface temperature 46 C to 50 C 4 years e DE surface temperature 51 to 55 C 3 years e DE surface temperature 56 C and more Strengthen cooling power so that DE surface temperature is 55 C or less Even if the IDD is used intermittently the longest service life is 5 years C141 E078 02EN 6 5 3 4 Note The average DE surface temperature means the average temperature at the DE surface throughout the year when the IDD is operating T2 C TI C tl t2 T1xt1 T2xt2 Average DE surface temperature verag peratur a Parts that can be replaced in the field The PCA cannot be replaced in the field The DE cannot be replaced in the field Service system and repairs Fujitsu has the service system and repair facility for the disk drive Contact Fujitsu representative to submit information for replacing or repairing the disk drive Generally the following information must be included a b d IDD model part number P N revision number serial number S N and date of manufacturing Error status e
39. IAGNOSTICS AND MAINTENANCE 6 1 Diagnostics 6 2 Maintenance Information This chapter describes diagnostics and maintenance information 6 1 Diagnostics 6 1 1 Self diagnostics The IDD has the following self diagnostic function This function checks the basic operations of the IDD e Initial self diagnostics e Online self diagnostics SEND DIAGNOSTIC command Table 6 1 lists the contents of the tests performed with the self diagnostics For a general check of the IDD including the operations of the host system and interface use a test program that runs on the host system see Subsection 6 1 2 Table 6 1 Self diagnostic functions SEND DIAGNOSTIC command Initial iba Self Test 1 Self Test 1 Unit Offline 0 Unit Offline 1 Hardware function test O C Y Seek test e Write read test Cylinder for internal test Note indicates the tests to be executed and arrows show the sequence of execution C141 E078 02EN 6 1 1 Brief test contents of self diagnostics are as follows a Hardware function test This test checks the basic operation of the controller section and contains following test e microcode is stored e Peripheral circuits of microprocessor MPU e Memory RAM e Data buffer b Seek test This test checks the positioning operation of the disk drive using several seek modes 2 points seek 1 position sequential seek etc The positioning opera
40. NDIX FIBRE CHANNEL INTERFACE FUNCTIONS D 1 Fibre Channel Interface Function Specifications This appendix lists the fibre channel interface functions provided for the IDD Refer to the Fibre Channel Logical Interface Specifications for details of each functions C141 E078 02EN D 1 D 1 Fibre Channel Interface Function Specifications Table D 1 channel interface function specifications 1 of 8 O Provided Not provided Item Specification Task SIMPLE QUEUE TYPE susie HEAD OF QUEUE TYPE ORDERED QUEUE TYPE UNTAGGED Task TERMINATE TASK manage ment flag CLEAR ACA message TARGET RESET CLEAR TASK SET L ver O ABORT TASK SET 0 TEST UNIT READY 00 Oo REZERO UNIT 0D O REQUEST SENSE 00 o FORMAT UNIT 00 o FmtData format data 0 Interleave factor Block address format defect listing Block address format defect listing Byte distance from index format defect listing Byte distance from index format defect listing Physical sector address format defecting listing Physical sector address format defecting listing FOV Format Options Valid DPRY Disable Primary DCRT Disable Certification STPF Stop Format IP Initialization Pattern x x x x DSP Disable Saving Parameters x Command CmpLst complete list 0 O Group 0 NEM 06064 Immed Immediate 0 REASSIGN BLOCKS o Oo READ 9 wane w 9 seek
41. O FUJITSU MAF3364FC SERIES MAG3182FC MAG3091FC SERIES DISK DRIVES FIBRE CHANNEL INTERFACE PRODUCT MANUAL C141 E078 02EN Specification No C141 E078 EN The contents of this manual is subject to change without prior notice All Rights Reserved Copyright 2000 FUJITSU LIMITED C141 E078 02EN 1 This page is intentionally left blank FOR SAFE OPERATION Handling of This manual This manual contains important information for using this product Read thoroughly before using the product Use this product only after thoroughly reading and understanding especially the section Important Alert Items in this manual Keep this manual handy and keep it carefully FUJITSU makes every effort to prevent users and bystanders from being injured or from suffering damage to their property Use the product according to this manual Functional Limitations There may be certain functional limitations concerning the specifications and functions of the products covered by this manual depending on the equipment version especially concerning the following functions Versions in which there functions can be used will be communicated through ENGINEERING CHANGE REQUEST NOTICE issued by Fujitsu Equipment Version Which Supports These Functions Equipment EPROM Standard INQUIRY Data Product Version No Version No Revision E These commands cannot be used in the current version READ R
42. O Not changeable x x x O Changeable O 16 B Savable O Changeable O Changeable x O Not changeable Table D 1 channel interface function specifications 3 of 8 O Provided Not provided MODE SELECT continued Page 3 Format parameter O 24 B Savable Number of tracks zone O Not changeable Number of alternate sectors zone O Changeable Number of alternate tracks zone O Not changeable Number of alternate tracks drive O Not changeable Number of alternate sectors track O Not changeable Data byte length physical sector O Changeable Interleave factor O No interleave Track skew factor O Not changeable Cylinder skew factor O Not changeable SSEC HSEC Soft Sector Head Sector O Not changeable RMB Removable O Not changeable SURF Surface O Not changeable Page 4 Drive parameter O 24 B Savable Command Group 0 Number of cylinders O Changeable Number of heads O Not changeable Write Precompensation start cylinder Reduced Write Current start cylinder Drive step rate Landing zone cylinder RPL Rotational Position Locking Rotational synchronization offset Medium rotational speed O Not changeable Page 7 Verify error recovery O 12 B Savable EER Enable Early Recovery O Changeable PER Post Error O Changeable DTE Disable Transfer on Error Specified value ignored DCR Disable Correction O Changeable Retry count at verific
43. RIPTION This chapter introduces the MAF3364FC and MAG series disk drives and discusses their standard features hardware and system configuration Chapter 2 SPECIFICATIONS This chapter gives detailed specifications of the MAF3364FC and MAG series disk drives and their installation environment Chapter 3 DATA FORMAT This chapter describes the data structure of the disk the address method and what to do about media defects Chapter 4 INSTALLATION REQUIREMENTS This chapter describes the basic physical and electrical requirements for installing MAF3364FC and MAG series disk drives Chapter 5 INSTALLATION This chapter explains how to install MAF3364FC and MAG series disk drives It includes the notice and procedures for setting device number and operation modes mounting the disk drive and confirming drive operation Chapter 6 DIAGNOSIS and MAINTENANCE This chapter describes the automatic diagnosis and maintenance of the MAF3364FC and MAG series disk drives APPENDICES toD The appendixes give supplementary information including the locations of mounting connectors a list of setting items the signal assignments of interface connectors lists of model names and product numbers and SCSI interface functions Glossary Abbreviations C141 E078 02EN CONVENTIONS This manual uses the following conventions for alerts to prevent physical or property damages to users or by standards ADANGER A DANGER indicates t
44. al data blocks by reading them out after the above alternate block allocation is made to initialize format the disk If a defective data block is detected during the check the IDD generates the C list for defect location information and allocates the alternate block to the defective data block This alternate block allocation is made by means of alternate sector treatment only like processing by the REASSIGN BLOCKS command even if unused spare sectors exists in the same cylinder C141 E078 02EN 3 13 2 Alternate block allocation by REASSIGN BLOCKS command When the REASSIGN BLOCKS command is specified the alternate block is allocated to the defective logical data block specified by the initiator by means of alternate sector treatment If there are unused spare sectors in the same cylinder as the specified defective logical data block the alternate block is allocated to these unused spare sectors However the alternate block is allocated to unused spare sectors in the alternate cylinder when all spare sectors in the cylinder are used up Figure 3 8 is examples of the alternate block allocation by the REASSIGN BLOCKS command Example REASSIGN BLOCK 14 Example REASSIGN BLOCK 16 Alternate sectors Alternate sector The same cylinder Alternate cylinder X 2 X21 22 23 24 25 26 27 Alternate cylinder represents a
45. allowable directions in Subsection 4 1 2 vertical direction is recommended Storage a b Provide vaporproof packaging for storage The storage environment must satisfy the requirements specified in Subsection 2 1 3 when the drive is not operating To prevent condensation avoid sudden changes in temperature C141 E078 02EN 5 2 Setting 5 2 1 Loop ID setting When setting the fibre channel loop ID use SELO to SEL6 of interface connector CN1 IN bit weighting SEL6 corresponds to the MSB SELO to the LSB and 126 types of X 00 to X 7D can be specified as loop IDs 5 2 0 settings 1 Motor start mode The method for start control of the IDD spindle motor can be set in accordance with Table 5 1 Table 5 1 Motor start mode Open Open The drive is not connected to the system The drive does not start the spindle motor Open GND The drive is connected to the system After recognizing the connection the drive starts the spindle motor upon receipt of a START STOP UNIT command GND Open The drive is connected to the system After recognizing the connection the drive starts the spindle motor after a prescribed delay time has elapsed GND GND The drive is connected to the system The driver starts the spindle motor immediately after recognizing the connection IMPORTANT Set the loop ID so that there are no duplicates between devices on the same loop C141 E078 02EN 5 3 5 3 5 3 1 Mounting D
46. ange of environmental conditions Low noise and low vibration The noise level is low Approx 4 2 bels for the MAF3364FC and 4 0 bels for the MAG series This makes it ideal for office use The IDD has rubber vibration isolators which minimize the transfer of vibration Microcode downloading The IDD implements the microcode download feature This feature achieves easy maintainability of the IDD and function enhancing C141 E078 02EN 1 2 Hardware Structure An outer view of the IDD is given in Figures 1 1 and 1 2 The IDD is composed of the disk head spindle motor hermetically sealed disk enclosure DE with actuator and air circulation filter as well as read write pre amp with the print card unit PCA of the controller Figure 1 1 MAF3364FC outer view Figure 1 2 MAG series outer view C141 E078 02EN 1 5 1 2 3 Disks The disks have an outer diameter of 84 mm 3 31 inch and inner diameter of 25 mm 0 98 inch The disks are good for at least 15 000 contact starts and stops Each model contains following number of disks MAF3364 10 MAG3182 5 MAG3091 3 Heads The MR Magnet Resistive of the CSS contact start stop type heads are in contact with the disks when the disks are not rotating and automatically float when the rotation is started Figure 1 5 shows the configuration of disks and heads MAF3364 MAG3182 MAG3091 0 e 0 e 0 1 1 p
47. ates the detail information of the error detected in the self diagnostics The IDD status after the CHECK CONDITION status is posted differs according to the type of the detected error a When an error is detected in the seek or write read test the subsequent command can be accepted correctly When the command other than the REQUEST SENSE and NO OPERATION is issued from the same INIT the error information sense data is cleared b When an error is detected in the hardware function test the IDD posts the CHECK CONDITION status for all I O operation request except the REQUEST SENSE command The error status is not cleared and the Fault LED continues lighting up even if the error information sense data is read Only when the SCSI bus is reset the BUS DEVICE RESET message is issued or the power is turned off or re turned on the status can be cleared When this status is cleared the IDD executes the initial self diagnostics again see item 1 Refer to Chapter 4 of Fibre Channel Interface Specifications for further details of the command specifications A CAUTION Data loss When the SEND DIAGNOSTIC command terminates with the CHECK CONDITION status the INIT must collect the error information using the REQUEST SENSE command The RECEIVE DIAGNOSTIC RESULTS command cannot read out the error information detected in the self diagnostics Test programs The basic operations of the IDD itself can be checked with the self diagnostic func
48. ation O Changeable Correctable bit length O Not changeable Recovery processing time restriction O Not changeable D 4 C141 E078 02EN Table D 1 channel interface function specifications 4 of 8 O Provided Not provided MODE SELECT continued Page 8 Caching parameter Specification O 20 B Savable Command Group 0 DISC discontinuity MS Multiple Select WCE Write Cache Enable RCD Read Cache Disable Demand Read Retention Priority Write Retention Priority Prefetch suppression block count Minimum prefetch Maximum prefetch Maximum prefetch restriction block count Number of segments Buffer segment size Page A Control mode page RLEC Report Log Exception Condition Queue Algorithm modifier QErr Queue Error management RAC Report a Check SWP Software Write Protect DQue Disable Queuing RAEN UAEN EAEN Ready AEN Holdoff period C141 E078 02EN O Not changeable O Changeable O Changeable O Not changeable O Not changeable O Changeable O 12 B Savable x Specified value ignored O Changeable O Changeable Table D 1 channel interface function specifications 5 of 8 O Provided Not provided Page C Notch parameter Page 19 Fibre channel control parameter O 8 B DTOLI Disable Target Originated Loop O Not Changeable Initialization DTIPE Disable Target Initiated Port Enable O Not changeable ALWLI All
49. capacity Model Data block length User blocks Format capacity GB MAF3364FC 512 71 161 520 36 43 MAG3182FC 512 35 694 860 18 27 MAG3091FC 512 17 827 698 9 12 C141 E078 02EN 3 9 3 2 1 2 3 10 Logical Data Block Addressing Independently of the physical structure of the disk drive the IDD adopts the logical data block addressing as a data access method on the disk medium The IDD relates a logical data block address to each physical sector at formatting Data on the disk medium is accessed in logical data block units The INIT specifies the data to be accessed using the logical data block address of that data The logical data block addressing is a function whereby individual data blocks are given addresses of serial binaries in each drive Block address of user space The logical data block address number is consecutively assigned to all of the data blocks in the user space starting with O to the first data block The treats sector 0 track 0 cylinder O as the first logical data block The data block is allocated in ascending order of addresses in the following sequence refer to Figure 3 5 Numbers are assigned in ascending order to all sectors in the same track 2 By following step 1 numbers are assigned in ascending order of tracks to all sectors in each track in the same cylinder except the last track 3 By following step 1 numbers are assigned to all sectors in the last track except the spa
50. der the not ready state such as INQUIRY START STOP UNIT is terminated with the CHECK CONDITION status NOT READY 2 logical unit not ready 04 00 during the interval from the spindle motor becomes stable to the IDD becomes ready The executable command under the not ready state is executed in parallel with the initial self diagnostics or is queued by the command queuing feature and is executed after completion of the initial self diagnostics When the command that comes under the exception condition of the command queuing is issued at that time the IDD posts the BUSY status for the command When the error is detected during the initial self diagnostics the CHECK CONDITION status is posted for all commands that were stacked during the initial self diagnostics For the command execution condition refer to Section 2 4 and Subsection 2 7 4 in Fibre Channel Interface Specifications Online self diagnostics SEND DIAGNOSTIC command The INIT can make the IDD execute self diagnostics by issuing the SEND DIAGNOSTIC command The INIT specifies the execution of self diagnostics by setting 1 for the SelfTest bit on the CDB in the SEND DIAGNOSTIC command and specifies the test contents with the UnitOfl bit When the UnitOfl bit on the CDB is set to 0 the IDD executes the hardware function test only once When UnitOfl bit is set to 1 the IDD executes the hardware function test seek positioning test and data write read test for the CE space only
51. eld Otherwise specify 0 in number of data blocks field In this case the number of logical data blocks after initialization is determined by the value specified in the format parameter page code 3 and drive parameter page code 4 b Format parameter page code 3 Specify the number of spare sectors for each cylinder in the alternate sectors zone field and specify the number of tracks for alternate cylinders number of alternate cylinders x number of disk drive heads in the alternate tracks zone field It is recommended not to specify values smaller than the IDD default value in this field C141 E078 02EN 5 9 2 5 4 4 5 10 c Drive parameter page code 4 To explicitly specify the number of cylinders in the user space specify the number in the number of cylinders field Note that the number of alternate cylinders specified by the format parameter page code 3 is included in the number of cylinders in the user space When the number of cylinders need not be specified specify 0 or the default value in the number of cylinders field In this case either of the smaller value between the number of cylinders to allocate the number of logical data blocks specified in the number of data blocks field of the block descriptor or the maximum number of cylinders that can be used as the user space on the disk drive is allocated in the user space When 0 is specified both in the number of cylinders field and the numb
52. elocity of more than 0 5 m s is required in an environment at 40 C and an air flow with a wind velocity of more than 1 0m s in an environment at 45 C Center of DE cover lt 55 C e Cool the PCA side especially with air circulation inside the cabinet Confirm the cooling effect by measuring temperature of specific ICs and the DE These measurement results should be within a criteria listed in Table 4 1 4 6 C141 E078 02EN Table 4 1 Surface temperature check point Figure 4 6 Surface temperature measurement points C141 E078 02EN 4 Service clearance area The service clearance area or the sides which must allow access to the IDD for installation or maintenance is shown in Figures 4 7 Pre Surface R Hole for mounting screw Surface P Cable connection Surface Q Hole for mounting screw Figure 4 7 Service clearance area 5 External magnetic field The drive should not be installed near the ferromagnetic body like a speaker to avoid the influence of the external magnetic field 6 Leak magnetic flux The IDD uses a high performance magnet to achieve a high speed seek Therefore a leak magnetic flux at surface of the IDD is large Mount the IDD so that the leak magnetic flux does not affect to near equipment A CAUTION Damage to drive A hole or screw portion as shown in Figu
53. er of data blocks field of the block descriptor the maximum number of cylinders that can be used as the user space on the disk drive is allocated in the user space FORMAT UNIT command Initialize all sides of the disk with the FORMAT UNIT command The FORMAT UNIT command initializes all sides of the disk using the P lists verifies data blocks after initialization and allocates an alternate block for a defect block detected with verification With initialization the value 00 is written into all bytes of all logical data blocks Only the position information of defect blocks detected with verification is registered in the G list The specifications are as follows a Specifying CDB Specify O for the FmtData bit and the CmpLst bit on CDB 000 for the Defect List Format field and data pattern written into the data block at initialization for the initializing data pattern field b Format parameter When the values in step a are specified with CDB the format parameter is not needed Setting parameters The user can specify the optimal operation mode for the user system environments by setting the following parameters with the MODE SELECT or MODE SELECT EXTENDED command Error recovery parameter Disconnection reconnection parameter Caching parameter Control mode parameter With the MODE SELECT or MODE SELECT EXTENDED command specify 1 for the SP bit on CDB to save the specified parameter value on the disk This enables the
54. er of the fibre channel and high function command set of the MAF3364FC and MAG series intelligent disk drives will facilitate construction of a high performance and highly reliable disk subsystem with large storage capacity With respect to data formatting it is possible to change it to a format different from the one at the time of shipment by performing reinitialization on the installed system C141 E078 02EN 1 1 1 1 1 2 3 4 5 6 Standard Features Compactness The IDD has the FC AL controller which supports the Arbitrated Loop FC AL of the fibre channel modes defined by the ANSI standard embedded in the 3 5 inch fixed disk drive form factor FC AL standard The IDD provides not only FC AL basic functions but also the following features e Arbitration e Data frame CRC function e Command set which meets the logical specification of the SCSI CCS Common Command Set for Direct Access Device requirements Rev 4 B The SCSI commands can manipulate data through logical block addressing regardless of the physical characteristics of the disk drive This allows software to accommodate future expansion of system functions Dual port support In order to support dual ports the IDD is equipped with two pairs of fibre channel driver receiver High speed data transfer The data transfer rate on the fibre channel loop is 106 25 MB s maximum In addition the large capacity data buffer of the IDD allows the
55. ernate block reassignment If a defective data block is detected during read the IDD can automatically reassign its alternate data block C141 E078 02EN 1 3 14 15 16 17 18 19 20 21 22 Programmable data block length Data can be accessed in fixed block length units The data block length is programmable and can at initializing with a multiple of four for the 512 to 528 bytes Defective block slipping A logical data block can be reallocated in a physical sequence by slipping the defective data block at formatting This results in high speed contiguous data block processing without a revolution delay due to defective data block High speed positioning A rotary voice coil motor achieves fast positioning Large capacity A large capacity can be obtained from 3 inch disk drives by dividing all cylinders into several partitions and changing the recording density on each partition constant density recording The disk subsystem with large capacity can be constructed in the good space efficiency Start Stop of spindle motor Using the SCSI command the host system can start and stop the spindle motor Diagnosis The IDD has a diagnostic capability which checks internal controller functions and drive operations to facilitate testing and repair Low power consumption By using highly integrated LSI components the power consumption of the IDD is very low and this enables the unit to be used in wide r
56. ession of ECC error correction Retry count at verification c Additional error recovery parameters page code 21 RPR Parameter Report on parameter rounding by mode select command Retry count at seek error IMPORTANT Default value 1 enabled 1 enabled 1 enabled 0 disabled 0 Correction is enabled 63 0 Default value 1 enabled 0 disabled 0 Processing is continued 0 Correction is enabled 63 Default value 0 disabled 15 1 The user can arbitrarily specify the following parameters according to the system requirements e ARRE e e PER The user also can arbitrarily specify parameters other than the above However it is recommended to use the default setting in normal operations C141 E078 02EN 2 3 Disconnection reconnection parameters page code 2 The following parameters are used to optimize the start timing of reconnection processing to transfer data on the loop at a read READ or READ EXTENDED command or write operation WRITE WRITE EXTENDED or WRITE AND VERIFY command of the disk Refer to Chapter 3 of Fibre Channel Interface Specifications for further details a Disconnection reconnection parameters page code 2 Parameter Default value Buffer full ratio 20 HEX Buffer empty ratio 20 HEX IMPORTANT I Ina system without the disconnection function these parameters need not be specified 2 Determine the para
57. et so that the average DE surface temperature is as possible as low The service life under suitable conditions and treatment is as follows DE surface temperature 40 C or less 5 years DE surface temperature 41 C to 45 C 4 5 years DE surface temperature 46 C to 50 C 4 years DE surface temperature 51 C to 55 C 3 5 years DE surface temperature 56 C and more Strengthen cooling power so that DE surface temperature is 55 C or less Even if the IDD is used intermittently the longest service life is 5 years Note The average DE surface temperature means the average temperature at the DE surface throughout the year when the IDD is operating T2 C T1 C tl t2 T1xt1 T2xt2 Average DE surface temperature B ESOS TET Data security at power failure Integrity of the data on the disk is guaranteed against all forms of DC power failure except on blocks where a write operation is being performed The above does not applied to formatting disks or assigning alternate blocks C141 E078 02EN 3 DATA FORMAT 3 1 Data Space 3 2 Logical Data Block Addressing 3 3 Defect Management This chapter explains data space definition logical data block addressing and defect management on the IDD 3 1 Data Space The IDD manages the entire data storage area divided into the following three data spaces e User space Storage area for user data e Internal test space Re
58. f signal lines is called a link Since signals on a link are transmitted in one direction wiring must be conducted so that it may form a loop connection on the system In the case of the FC AL interface information is transmitted received via each node connected on a loop Accordingly if the power supply is off at a node connected to the loop or if interface signals cannot be transmitted received normally the loop will no longer function To avoid such a nonconformity a circuit called port bypass circuit is generally provided on the back plane of the system BC in Figure 1 4 shows this port bypass circuit Node addressing Each node on the fibre channel loop is assigned its specific model number SEL ID The SEL ID of the drive is set at the signal level on the back plane through 7 signals from SEL_0 to SEL_6 of the SCA interface connector CN1 In signal bit weighting SEL_6 is the MSB indicating 2 and SEL_0 is the LSB indicating 2 The SEL ID setting of the drive ranges from 0 x 00 to 125 x 7D C141 E078 02EN 2 SPECIFICATIONS 2 1 Hardware Specifications This chapter describes specifications of the IDD 2 1 Hardware Specifications 2 1 1 Model name and part number The IDD is provided with various models according to the device type device capacity etc For the model name type and product number refer to the model name product number list Appendix D With respect to data formatting
59. hat personal injury will occur if the user does not perform the procedure correctly AWARNING A WARNING indicates that personal injury could occur if the user does not perform the procedure correctly ACAUTION A CAUTION indicates that either minor or moderate personal injury may occur if the user does not perform the procedure correctly NOTICE NOTICE indicates that inconvenience to the user such as damages to the product equipment data and or other property may occur if the user does not pay attention or perform the procedure correctly IMPORTANT IMPORTANT indicates information that the helps the user use the product more effectively Indicates This manual indicates Decimal number Indicates as it is Hexadecimal number Indicates as X 17B9 17B9h or 17B9H Binary number Indicates as 010 or 010b vi C141 E078 02EN DISCLAIMER Failure of the MAF3364FC and MAG series intelligent disk drive is defined as a failure requiring adjustments repairs or replacement Fujitsu is not responsible for drive failures caused by misuse by the user poor environmental conditions power trouble host problems cable failures or any failure not caused by the drive itself The suffix of the model name of this disk drive varies depending on the two device types and storage capacity Note 1 However in this manual the typical model names Note 2 are used unless otherwise noted These disk drives may be called intelligent
60. he fibre channel regardless of actual data transfer rate of the disk drive Read ahead cache feature After executing the READ command the IDD reads automatically and stores prefetches the subsequent data blocks into the data buffer Read ahead caching The high speed sequential data access can be achieved by transferring the data from the data buffer without reaccessing the disk in case the subsequent command requests the prefetched data blocks Command queuing feature The IDD can queue maximum 63 commands and optimizes the issuing order of queued commands by the reordering function This feature realizes the high speed processing Reserve and release functions The IDD can be accessed exclusively in the multi host or multi initiator environment by using the reserve and release functions Enclosure service function The IDD supports an enclosure service interface ESI compliant with the SFF 8067 This interface provides the function of setting readin enclosure service information using the SCSI 3 enclosure service command set SES Error recovery The IDD can try to recover from errors in fibre channel loop or the disk drive using its powerful retry processing If a recoverable data check occurs error free data can be transferred to the initiator after being corrected in the data buffer The initiator software is released from the complicated error recover processing by these error recovery functions of the IDD Automatic alt
61. hsan Malaysia 60 3 793 3888 60 3 793 0888 mm m ER m 2 lt T UJITSU SYSTEMS BUSINESS THAILAND LTD 2th F1 Olympia Thai Tower 444 Rachadapisek Road amsennok Huay Kwang Bangkok 10320 Thailand TEL 66 2 512 6066 FAX 66 2 512 6068 mn FUJITSU LIMITED Reader Comment Form We would appreciate your comments and suggestions for improving this publication How did you use this publication Is the material presented effectively Learning Reference Maintaining Operating Installing Sales Fully Well Well covered Illustrated Organized What is your occupation is your overall rating of this publication Very Good Fair Very Poor Thank you for your interest Please send this sheet to one of the addresses in a left page co FUJITSU
62. lete List Cyclic Redundancy Check Contact Start Stop CYLinder Depth Data Defect List Disable Block Descriptor Direct Current Disable Correction Disable CeRtificaTion Disk Enclosure DEFective block Device Offline Disable Page Out Disable PRimarY Disable Saving Parameters Data Transfer Disconnect Control ECC EER EVPD F FG FIFO FmtData FOV FUA HSEC VO ID IDD ILBN Immed Disable Transfer on Error Error Correction Code Enable Early Recovery Enable Vital Product Data Frame Ground First In First Out Format Data Format Options Valid Force Unit Access Gap Grown defect list Height Hard SECtor Input Output IDentifier Intelligent Disk Drive Ideal Logical Block Number Immediate INDX SCT INDeX SeCTor IP ISG L LBdata LBN LED LUN M MR MS C141 E078 02EN Initialization Pattern InterSector Gap Logical Block data Logical Block Number Light Emitting Diode Logical Unit Number Magnetro Resistive Multiple Select AB 1 MSG OEM P P list P N PBdata PC board PCA PER PF PLOSync PMI PR4ML RC RCD REQ RMB RST RSV S S N SBd SBi SCSI SCT SEL SelfTest SG SP SPR SR SSEC STPF SURF AB 2 MeSsaGe Original Equipment Manufacturer Primary defect list Parts Number Physical Block data Printed Circuit board Printed Circuit Assembly Post ERror Page Format Phase Lock Oscillator Syncronous Partial Medium Indicator Partial
63. logical data block number Ix Defective sector s Unused spare sector Figure 3 8 Alternate block allocation by REASSIGN BLOCKS command 3 14 C141 E078 02EN Automatic alternate block allocation If the ARRE flag in the MODE SELECT parameter permits the automatic alternate block allocation the IDD automatically executes the alternate block allocation and data duplication on the defective data block detected during the READ EXTENDED command This allocation method is the same as with the REASSIGN BLOCKS command alternate sector treatment IMPORTANT Automatic alternate block allocation is made only once during the execution of one command If second defective block is detected the alternate block assignment processing for the first defective block is executed but the alternate block assignment processing for the second one is not executed and the command being executed terminates However the initiator can recover the twice error by issuing the same command again When an error is detected in a data block in the data area recovery data is rewritten and verified in automatic alternate block allocation during the execution of the READ or READ EXTENDED command Alternate block allocation will not be made for the data block if recovery is successful Example Even if the data error which is recoverable by the WRITE LONG command simulated automatic alternate block allocation will not be made for the data block C141 E078
64. meter values in consideration of the following performance factors of the system e Time required for reconnection processing e Average amount of processing data specified with a command Refer to Chapter 3 of Fibre Channel Interface Specifications for how to obtain the rough calculation values for the parameter values to be set Itis recommended to evaluate the validity of the specified values by measuring performance in an operation status under the average system load requirements Caching parameters The following parameters are used to optimize IDD Read Ahead caching operations under the system environments Refer to Chapter 3 of Fibre Channel Interface Specifications for further details C141 E078 02EN 5 13 a Read caching parameters Parameter Default value RCD Disabling Read Ahead caching operations 0 enabled WCE Write Cache Enable 0 disabled MS Specifying the multipliers of minimum prefetch 0 Specifying and maximum prefetch parameters absolute value DISC Prefetch operation after track switching during 0 inhibit prefetching Number of blocks for which prefetch is suppressed X FFFF Minimum prefetch X 0000 Maximum prefetch X OXXX 1 cache segment Number of blocks with maximum prefetch restrictions X FFFF Number of segments x4 IMPORTANT 1 When Read Ahead caching operations are disabled by the caching parameter these parameter settings have no meaning except write cache feature
65. mmended to issue the REQUEST SENSE command from the initiator host system to obtain information sense data for error analysis C141 E078 02EN 5 5 5 4 2 1 IMPORTANT The LED lights during the IDD is executing a command However in same commands the lighting time is only an instant Therefore it seems that the LED blinks or the LED remains off Checking connection When the initial operation is checked normally after power is turned on check that the IDD is connected to the loop from the host system Although checking the connection depends on the structure of the host system this section describes the general procedures Checking procedure Issuing the commands and determining the end status depends on the start mode of the spindle motor and unit attention report mode specified with setting terminal Figure 5 1 shows the recommended checking procedure for the mode that the motor starts when power is turned on Figure 5 2 shows for the mode that the motor starts by the START STOP UNIT command In these recommended checking procedures following items are checked Note Following steps a to e correspond to a to e in Figures 5 1 and 5 2 a Issue the TEST UNIT READY command and check that the IDD is connected correctly to the loop and the initial operation after power is turned on ended normally The command issue period of the TEST UNIT READY command shall be more than 20 ms b To control starting of the spindle moto
66. mospheric pressure due to surrounding temperature changes Read write circuit The read write circuit uses head LSI chips and extended partial response class 4 maximum likelihood EPR4ML modulator and demodulator circuit to prevent errors caused by external noise thus improving data reliability Controller circuit The controller circuit uses LSIs to increase the reliability and uses a high speed microprocessing unit MPU to increase the performance of the SCSI controller C141 E078 02EN 1 7 1 3 1 2 System Configuration As the fibre channel mode the ANSI standard defines three modes Arbitrated Loop Fabric and Point to Point This drive supports Arbitrated Loop FC AL Figure 1 4 shows an example of the system configuration Initiator Drive Node 1 Node 2 Drive Node 4 Figure 1 4 FC AL system configuration The mode of connection of all devices to the fibre channel is called node The drive and initiator correspond to the node shown in Figure 1 4 Each node has at least one port called N port In the FC AL a port is particularly called node loop NL port The MAF3364FC and MAG series have two ports one is connected to one FC AL and a maximum of 126 NL ports can be connected to one loop Loop configuration One port incorporates a transmit circuit and receive circuit Information is transmitted received by differential signals via electric signal lines This pair o
67. nto DATA IN DATA OUT COMMAND STATUS MESSAGE IN and MESSAGE OUT phases depending on the type of information being transferred Common Command Set The standard SCSI logical specification stipulated by a working committee of ANSI Functions necessary for direct access devices are defined Command Descriptor Block A group of data that describes the command for I O and is transferred from an initiator to a target Issued to a target to direct an input output operation and written as CDB Operation performed by the target to free itself from the SCSI bus and the initiator temporarily when SCSI bus operation becomes unnecessary during command processing SCSI device that has initiated an input output operation on the SCSI device This is abbreviated as INIT Simple unit of equipment that can be directed to perform one I O operation on the SCSI bus Logical unit number used to identify a logical unit Information that controls a series of bus phases and I O sequence between the initiator and the target on the SCSI bus Operation performed by the target to reconnect itself with the initiator when operation on the SCSI bus becomes necessary after disconnection Small computer system interface An input output interface standardized by the American National Standards Institute ANSI Standard number ANSI X3 131 1986 General term for a device Input output device I O controller and host adapter etc connected to an SCSI bus
68. or alternate blocks when primary cylinders in the user space are used up See Subsections 3 1 2 and 3 3 2 for details Internal test space The Internal test space is an area for diagnostic purposes only and its data block length is always 512 byte The internal test space consists of only 1 cylinder and outer host cylinder 37 is always assigned The user cannot change the number of cylinders in the internal test space or their positions The IDD reads or writes the data block in the CE space during the self diagnostic test specified with the setting terminal diagnostic mode or a SEND DIAGNOSTIC command System space The system space is an area for exclusive use of the IDD itself and the following information are recorded The length of the data block is always 512 bytes Defect list P list and G list MODE SELECT parameter saved value Statistical information log data Controller control information The above information are duplicated in several different locations for safety Note The system space is also called SA space Alternate spare area The alternate spare area is provided in the last track of each primary cylinder in the user space and in the last track of the cylinder and the alternate cylinder C141 E078 02EN 1 The spare area in each cylinder is placed at the end of the last track as shown in Figure 3 2 These spare sectors are located in the end of the track logically not necessarily located at the
69. ow Login Without Loop Initialization DSA Disable Soft Address DLM Disable Loop Master DDIS Disable Discovery Page 21 Additional error recovery VU 1 RPR Rounded Parameter Report Retry count at seek error O Changeable RESERVE 16 RELEASE 17 COPY 18 Command MODE SENSE Group 0 DBD Disable Block Descriptor Page 0 Non Parameter Transfer START STOP UNIT Immed Immediate RECEIVE DIAGNOSTIC RESULTS Page 01 Configuration Page 02 Enclosure status Page 03 Help text Page 04 String in Page 05 Threshold in Page 06 Array status Page 07 Element descriptor Page 08 Short enclosure status Page 00 Specifiable page code list Page 40 Logical physical address conversion Fujitsu specific function D 6 C141 E078 02EN Table D 1 channel interface function specifications 6 of 8 O Provided x Not provided Command Group 0 Command Group 1 SEND DIAGNOSTIC PF Page Format Self Test Self Test Dev Ofl Device Offline Unit Ofl Unit Offline Page 0 Specifiable page code listing Page 02 Enclosure control Page 04 String out Page 05 Threshold out Page 06 Array control 1D O Specified value Page 40 Logical physical address conversion Page 80 Mode setup state report Page 81 Device specific information PREVENT ALLOW MEDIUM REMOVAL VU 1 VU 1 SEARCH BLOCK HIGH VU 1 20 SEARCH BLOCK EQUAL VU 1 21
70. physical sector is decided by multiple of 20MHz free running frequency This clock is not equal to the interval of the byte clock for each zone Therefore the physical sector length cannot be described with a byte length 119 700 CLKs 20MHz INDEX pulse sey Sector pulse gos TON Track Sector 0 Sector p Sector pt Sector p 2 4 9 gt n n n m n r Clock Clock Clock Clock Clock unused Figure 3 4 Track format MAF3364FC MAG series Track skew and cylinder skew To avoid waiting for one turn involved in head and cylinder switching the first logical data block in each track is shifted by the number of sectors track skew and cylinder skew corresponding to the switching time Figure 3 5 shows how the data block is allocated in each track At the head switching location in a cylinder the first logical data block in track t 1 is allocated at the sector position which locates the track skew behind the sector position of the last logical data block sector in track t At the cylinder switching location like the head switching location the first logical data block in a cylinder is allocated at the sector position which locates the cylinder skew behind the last logical sector position in the preceding cylinder The last logical sector in the cylinder is allocated when formatting and is an unused spare sector C141 E078 02EN INDEX INDEX
71. r from the host system issue the START STOP UNIT command to start the spindle motor c Check the loop operations with the WRITE BUFFER and READ BUFFER commands d Start the IDD self diagnostic test with the SEND DIAGNOSTIC command and check the basic operations of the controller and disk drive C141 E078 02EN Motor starts when power is turned on For Figure 5 2 No report UNIT ATTENTION report mode SCSI standard TEST UNIT READY command Yes REQUEST SENSE command Self test 1 Unit Of 1 No parameter Timeout 30 s or more REQUEST SENSE command 2 Processing when the command ended with CHECK CONDITION status Including execution time Abnormal end of initial self diagnostics REQUEST SENSE command Figure 5 1 Checking the IDD connection A C141 E078 02N 5 7 Motor starts by START STOP command TEST UNIT READY command a No Yes REQUEST SENSE command UNIT ATTENTION No report report mode SCSI standard No NOT READY 2 eu Yes Yes START STOP UNIT command Immed 0 b Executing time opprox 30 seconds No GOOD status REQUEST SENSE command To Figure 5 1 ncluding executing time of initial self diagnostics Abnormal end Figure 5 2 Checking the IDD connection B C141 E078 02EN 2 5 4 3 1 Checking at abnormal end a When sense data can be obtained with the REQUEST SENSE command
72. re sectors 4 After completing steps 1 through 3 for the same cylinder this allocation is repeated from track O in the next cylinder and on to the last cylinder cylinder p q in Figure 3 1 except for the alternate cylinders in ascending order of cylinder numbers When the logical data block is allocated some sectors track skew and cylinder skew shown in Figure 3 5 are provided to avoid waiting for one turn involving head and cylinder switching at the location where the track or the cylinder is physically switched See Subsection 3 3 2 for defective alternate block treatment and the logical data block allocation method in case of defective sectors exist on the disk Alternate area Alternate areas in the user space spare sectors in the cylinder and alternate cylinders are not included in the above logical data block addresses Access to sectors which are allocated as an alternate block in the alternate area is made automatically by means of IDD sector slip treatment or alternate block treatment explained in Subsection 3 3 2 so the user does not have to worry about accessing the alternate area The user cannot access with specifying the data block on the alternate area explicitly C141 E078 02EN 3 3 3 3 1 3 3 2 Defect Management Defect list Information of the defect location on the disk is managed by the defect list The following are defect lists which the IDD manages e list Primary defect list This list consi
73. re 4 8 is used for adjusting air pressure balance between inside and outside the DE Do not fill with a seal or label Seals on the DE prevent the DE inside from the dust Do not damage or peel off labels 4 8 C141 E078 02EN a MAF3364FC Air pressure adjustment hole b MAG series Figure 4 8 Air pressure adjustment hole C141 E078 02EN 4 9 4 2 Power Supply Requirements 1 Allowable input voltage and current The power supply input voltage measured at the power supply connector pin of the IDD receiving end must satisfy the requirement given in Subsection 2 1 3 For other requirements see Items 4 and 5 below 2 Current waveform reference Figure 4 9 shows the waveform of 12 VDC CURRENT 1a div CURRENT 14 div Gtk EE Th E D ce EIE COUTE aora MAF3364FC MAG series Figure 4 9 Current waveform 12 VDC 3 Power on off sequence a The order of the power on off sequence of 5 VDC and 12 VDC supplied to the IDD does not matter 4 Sequential starting of spindle motors After power is turned on to the IDD a large amount of current flows in the 12 VDC line when the spindle motor rotation starts Therefore if more than one IDD is used the spindle motors should be started sequentially using one of the following procedures to prevent overload of the power supply unit For how to set a spindle motor start control mode see Subsection 5 3 2 a Issue START STOP UNIT
74. read out the contents of the P and G lists by the READ DEFECT DATA command Alternate block allocation The alternate data block is allocated to a defective data block sectors in defective sector units by means of the defect management method inside the IDD The INIT can access all logical data blocks in the user space as long as there is no error Spare sectors to which alternate blocks are allocated can be provided in either spare sectors in a cylinder or alternate cylinders See Subsection 3 1 2 for details The INIT can specify the size and area for spare sectors by the MODE SELECT or MODE SELECT EXTENDED command at the time of the initialization of the disk Both of the following are applicable to the alternate block allocation e Sector slip treatment Defective sectors are skipped and the logical data block corresponding to those sectors is allocated to the next physical sectors This treatment is made on the same cylinder as the defective sector s and is effective until all spare sectors in that cylinder are used up C141 E078 02EN 3 11 1 3 12 e Alternate sector treatment The logical data block corresponding to defective sectors is allocated to unused spare sectors in the same cylinder or unused spare sectors in the alternate cylinder The alternate block allocation is executed by the FORMAT UNIT command the REASSIGN BLOCKS command or the automatic alternate block allocation Refer to OEM Manual SCSI Logical
75. rives Mounting procedures Since mounting the drive depends on the system cabinet structure determine the work procedures considering the requirements specific to each system The general mounting method and items to be checked are shown below See Subsection 4 1 for the details of requirements for installing the IDD 1 Fix the drive in the system cabinet with four mounting screws as follows e drive has 8 mounting holes both sides 2 2 bottom 4 Fix the drive by using four mounting holes of both sides or the bottom See Figure 4 5 e Use mounting screws whose lengths inside the drive mounting frame are 4 mm or less when the screws are tightened see Figure 4 4 e When mounting the drive be careful not to damage parts on the PCAs 2 Check to ensure that the DE is not touching the frame on the system side after tightening the screws At least 2 5 mm of clearance is required between the DE and the frame Indicated in Figure 4 4 3 When an electric driver is in use less than low impact device specifications must be used C141 E078 02EN 5 4 5 41 1 2 3 Confirming Operations after Installation and Preparation for Use Confirming initial operations This section describes the operation check procedures after power is turned on Since the initial operation of the IDD depends on the setting of the motor start mode check the initial operation by either of the following procedures Initial operation
76. rmation detected in the self diagnostics Damage Do not open the DE in the field because it is completely sealed 6 5 Data loss Save data stored on the disk drive before requesting repair Fujitsu does 6 6 not assume responsibility if data is destroyed during servicing or repair C141 E078 02EN 1x MANUAL ORGANIZATION FIBRE CHANNEL INTERFACE PRODUCT MANUAL This manual FIBRE CHANNEL INTERFACE SPECIFICATIONS FIBRE CHANNEL INTERFACE MAINTENANCE MANUAL General Description Specifications Data Format Installation Requirements Installation Diagnostics and Maintenance Fibre Channel Interface Command Processing Data Buffer Management Command Specification Sense Data and Error Recovery Procedure Disk Medium Management Specifications and Equipment Configuration Maintenance and Diagnostic Error Analysis Removal and Replacement Procedures Principle of Operation C141 E078 02EN CONTENTS CHAPTER 1 GENERAL 1 E 1 1 Standard Features nni ee E e a ete PH o Ra P P PR PO e potes 1 2 1 2 RES A eee em t e Here ederent nie 1 5 1 3 System Coritigurati n i dieere dete aereas eit 1 8 2 seta seen seen seen setas etna senatu ain 2 1 2 1 Hardware Specifications
77. s PAD 2 8 bytes PAD 3 6 bytes Figure 3 6 Sector format C141 E078 02EN 1 2 3 4 5 6 7 8 9 Each sector on the track consists of the following fields Gaps G1 The gap length at the time of formatting initializing is listed in Figure 3 7 Pattern X 00 is written on the gap field PLO Sync In this field pattern X 00 in the length in bytes listed in Figure 3 6 is written Trailing TRNG Sync Byte SB In this field special pattern in the length in bytes listed in Figure 3 6 is written LBA The logical block address is written in this field Data field User data is stored in the data field of the sector The length of the data field is equal to that of the logical data block which is specified with a parameter in the MODE SELECT command Any even number between 512 to 528 bytes can be specified as the length BCRC It is a 4 byte error detection code Errors in the ID field Single burst errors with lengths of up to 32 bits for each logical block can be detected ECC 24 byte data error detection correction code for the data field It is possible to on the fly correct the single burst errors with lengths of up to 89 bits PAD 1 A specified length of x 00 pattern shown in Figure 3 6 is written in this field This field includes the variation by rotation and circuit delay till reading writing PAD 2 PAD 3 A specified length of x 00 pattern shown in Figure
78. served area for diagnostic purposes e System space Area for exclusive use of IDD itself The user space allow a user access by specifying data These space can be accessed with the logical data block addressing method described in Section 3 2 The internal test space is used by Read write test of self diagnostics test but user can t use direct access The system space is accessed inside the IDD at power on or during the execution of a specific command but the user cannot directly access the system space Cylinder configuration The IDD allocates cylinders to the user space internal test space and system space Figure 3 1 is the cylinder configuration Spare areas alternate areas for defective sectors are provided in the user space Several sectors in the last track of one cylinder and several cylinders alternate cylinders in the user space are allocated as alternate areas according to the user s assignment MODE SELECT command See Subsection 3 1 2 for details C141 E078 02EN 3 1 Sector 0 123 B Cylinder 37 Internal test cylinder Internal test space Cylinder 33 System cylinder x 29 E m System space Cylinder 4 System cylinder 0 Track 0 1 1 1 Ss AA Cylinder 0 Primary Cylinder 1 Spare sector for each cylinder Cylinder 1 Primary Cylinder 1 User space Bente 1 Primary Cylinder 1 A der Alternate Alternate
79. sts of defect location information available at the disk drive shipment and is recorded in a system space The defects in this list are permanent so the INIT must execute the alternate block allocation using this list when initializing the disk e D list Data defect list This list consists of defect location information specified in a FORMAT UNIT command by the INIT at the initialization of the disk This information is recorded in the system space of the disk drive as the G list To execute the alternate block allocation the FORMAT UNIT command must be specified e list Certification defect list This list consists of location information on defective blocks which are detected by the verifying operation certification of the data block after the initiation when executing the FORMAT UNIT command The IDD generates this information when executing the FORMAT UNIT command and the alternate block allocation is made upon the defective block This information is recorded in the system space of the disk drive as the G list e G list Growth defect list This list consists of defective logical data block location information specified in a REASSIGN BLOCKS command by the INIT information on defective logical data blocks assigned alternate blocks by means of IDD automatic alternate block allocation information specified as the D list and information generated as the C list They are recorded in the system space on the disk drive The INIT can
80. the field To change the revision number because parts are replaced or other modification is applied in the field the new level is indicated by enclosing the corresponding number in the corresponding letter line with O see Figure 6 2 C141 E078 02EN 6 7 IMPORTANT When the revision number is changed after the drive is shipped from the factory Fujitsu issues Engineering Change Request Notice in which the new revision number is indicated When the user changes the revision number the user should update the revision label as described in item 2 after applying the modification At shipment REVNO A 2423456789 Rev A2 DE REV A N1234 Revising at field REVNO A 2 20 456789 L gt Rev DE REV A 3N1234 Figure 6 2 Indicating revision numbers C141 E078 02EN APPENDIX A LOCATIONS OF CONNECTORS A 1 Locations of Connectors This appendix shows the locations of connectors for 8 and 16 bit SCSIs C141 E078 02EN 1 Locations of Connectors Rear view MAF3364FC Pin 40 Nr FAI AAE Sy E EENE 3 A 4 610 5 Rear view MAG series Pin 40 4 6t0 5 Figure A 1 Locations of connectors A 2 C141 E078 02EN APPENDIX B CONNECTOR SIGNAL ALLOCATION B 1 Interface FC SCA Connector Signal Allocation This appendix describes the connector signal allocation C141 E078 02EN B B 1 Interface FC SCA Connector Signal Allocation
81. tion However to check general operations such as the host system and interface operations in a status similar to the normal operation status a test program that runs on the host system must be used The structure and functions of the test program depend on the user system requirements Generally it is recommended to provide a general input output test program that includes devices connected to the loop and input output devices on other I O ports Including the following test items in the test program is recommended to test the IDD functions generally C141 E078 02EN 1 2 3 4 6 2 6 2 1 1 2 Interface test The operations of the loop and data buffer on the IDD are checked with the WRITE BUFFER and READ BUFFER commands Basic operation test The basic operations of the IDD are checked by executing self diagnosis with the SEND DIAGNOSTIC command see Subsection 6 1 1 Random sequential read test The positioning seek operation and read operation are tested in random access and sequential access modes with the READ READ EXTENDED or VERIFY command Write read test By using a data block in the internal test space the write read test can be executed with an arbitrary pattern for a disk drive in which user data is stored Maintenance Information Maintenance requirements Preventive maintenance Preventive maintenance such as replacing air filters is not required A CAUTION Damage Do not open the D
82. tion is checked with confirming the physical address information by reading the ID field from the data block on track 0 after completion of the seek operation to the target cylinder c Write read test This test check the write read function by using the Internal test space of the disk drive Initial self diagnostics When power is turned on the IDD starts initial self diagnostics The initial self diagnostics checks the basic operations of the hardware functions If an error is detected in initial self diagnosis the Fault LED lights up In this status the IDD reports the CHECK CONDITION status to all input output operation requests other than the REQUEST SENSE command When the CHECK CONDITION status is posted the INIT should issue the REQUEST SENSE command The sense data obtained with the REQUEST SENSE command details the error information detected with the initial self diagnostics Even if CHECK CONDITION status and sense data are posted the LED continues blinking Only when the SCSI bus is reset the BUS DEVICE RESET message is issued or the power is turned off or re turned on this status can be cleared When this status is cleared the IDD executes the initial self diagnosis again C141 E078 02EN 2 The IDD does not reply to the loop for up to 2 seconds after the initial self diagnostics is started After that the IDD can accept the I O operation request correctly but the received command except the executable commands un
83. ure 4 6 the inward projection of the screw from the IDD frame wall at the corner must be 4 mm or less c Tightening torque of screw must be secured with 6kg cm or less d Impact caused by the electric driver must be within the device specifications e Must be handled on an anti static mat Bottom side mounting Side side mounting 2 5 or more 2 5 or more SEI 2 5 or more A B y 2 5 or A more System Frame of system cabinet 4 or less cabinet 2 5 or 6 A 4or less T CLS 26 A 2 5 o screw more Details of A Details of B Unit mm screw Figure 4 4 Mounting frame structure C141 E078 02EN 4 5 2 Limitation of side mounting Mount the side using the screw holes at both the ends as shown in Figure 4 5 Do not use the center hole Holes for mounting cera Do not use these holes Holes for mounting screw Use these holes No 1 to 4 to mount Figure 4 5 Limitation of side mounting 3 Environmental temperature Temperature condition at installed in a cabinet is indicated with ambient temperature measured 3 cm from the disk drive At designing the system cabinet consider following points e Make a suitable air flow so that the DE surface temperature does not exceed 55 ACAUTION An air flow with an adequate wind velocity must be maintained to deal with much heat generated from the MAC30xxFC Reference value An air flow with a wind v
84. user to make full use of the high speed data transfer capability of the fibre channel loop High speed spindle motor The IDD increases the number of revolutions of the spindle motor from conventional 7 200 rpm to 10 025 rpm Increasing the number of revolutions of the spindle motor will make it possible to improve the data transfer rate and reduce the rotation wait time Continuous block processing The addressing method of data blocks is logical block address The initiator can access data by specifying block number in a logically continuous data space without concerning the physical structure of the track or cylinder boundaries The continuous processing up to 64K 1 blocks in a command can be achieved and IDD can perform continuous read write operation when processing data blocks on several tracks or cylinder C141 E078 02EN 7 8 9 10 11 12 13 4MB programmable multi segment data buffer Data is transferred between fibre channel loop and disk media through the embedded 4MB data buffer in the IDD This buffer can be divided into maximum 32 areas This feature provides the suitable usage environment for users Since the initiator can control the disconnect reconnect timing on the fibre channel loop by specifying the condition of stored data to the data buffer or empty condition of the data buffer the initiator can perform the effective input output operations with utilizing high data transfer capability of t

Fujitsu MAG3091FC User's Manual

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