Publication number: 100293068, Rev. L November 2020
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Table 1.ISO v American Numbering Conventions ......................................................................................................................36
Table 2.Typical CDB for 6-byte commands ...................................................................................................................................38
Table 3.Typical CDB for 10-byte commands .................................................................................................................................38
Table 4.Typical CDB for long LBA 16-byte commands .............................................................................................................39
Table 5.Typical CDB for 12-byte commands .................................................................................................................................39
Table 11.Sense data response codes .................................................................................................................................................46
Table 12.Descriptor format sense data .............................................................................................................................................47
Table 13.Sense data descriptor format .............................................................................................................................................48
Table 14.Sense data descriptor types ................................................................................................................................................48
Table 15.Information sense data descriptor format .....................................................................................................................49
Table 16.Command-specific information sense data descriptor format ..............................................................................49
Table 17.Sense key specific sense data descriptor format .........................................................................................................50
Table 18.Sense key specific field definitions ...................................................................................................................................51
Table 19.Field pointer sense key specific data ...............................................................................................................................51
Table 20.Actual retry count sense key specific data .....................................................................................................................52
Table 21.Progress indication sense key specific data ..................................................................................................................52
Table 22.Segment pointer sense key specific data .......................................................................................................................53
Table 23.Unit attention condition queue overflow sense key specific data .......................................................................53
Table 24.Field replaceable unit sense data descriptor format .................................................................................................54
Table 25.Progress indications sense data descriptor format ....................................................................................................54
Table 26.Vendor specific sense data descriptor format ..............................................................................................................55
Table 27.Fixed format sense data .......................................................................................................................................................56
Table 29.Additional Sense and Additional Sense Qualifier codes ..........................................................................................60
Table 30.Commands sorted by command name .........................................................................................................................65
Table 31.Commands sorted by operation code ...........................................................................................................................68
Table 32.BACKGROUND CONTROL command ...............................................................................................................................71
Table 33.BO_CTL field .............................................................................................................................................................................71
Table 35.Definition parameter field ...................................................................................................................................................72
Table 36.FORMAT UNIT command .....................................................................................................................................................74
Table 37.FORMAT UNIT command address descriptor usage ..................................................................................................76
Table 38.FFMT field description ..........................................................................................................................................................77
Table 39.FORMAT UNIT parameter list ..............................................................................................................................................78
Table 40.Short parameter list header ................................................................................................................................................79
Table 41.Long parameter list header .................................................................................................................................................79
Table 42.FMTPINFO field and PROTECTION FIELDS USAGE field ............................................................................................80
Table 44.initialization pattern type field ..........................................................................................................................................83
Table 46.Short block format address descriptor (000b) .............................................................................................................84
Table 47.Bytes from index format address descriptor (100b) ...................................................................................................85
Table 48.Bytes from index format address descriptor (100b) ...................................................................................................86
Table 49.Long block format address descriptor (011b) ..............................................................................................................87
Table 50.Bytes from index format address descriptor (100b) ...................................................................................................87
Table 51.Physical sector format address descriptor (101b) .......................................................................................................88
Table 52.GET LBA STATUS command ................................................................................................................................................89
Table 53.REPORT TYPE field ..................................................................................................................................................................90
Table 54.GET LBA STATUS parameter data ......................................................................................................................................90
Table 55.COMPLETION CONDITION field .........................................................................................................................................91
Table 56.LBA status descriptor format ..............................................................................................................................................92
Table 57.PROVISIONING STATUS field ...............................................................................................................................................92
Table 58.ADDITIONAL STATUS field ...................................................................................................................................................93
Table 59.GET LBA STATUS (32) command .......................................................................................................................................94
Table 60.GET PHYSICAL ELEMENT STATUS command ................................................................................................................95
Table 61.FILTER field ................................................................................................................................................................................96
Table 62.REPORT TYPE field ..................................................................................................................................................................96
Table 63.GET PHYSICAL ELEMENT STATUS parameter data ......................................................................................................97
Table 64.Physical element status descriptor format ....................................................................................................................98
Table 65.PHYSICAL ELEMENT TYPE field ..........................................................................................................................................99
Table 66.PHYSICAL ELEMENT HEALTH field ....................................................................................................................................99
Table 67.GET STREAM STATUS command .................................................................................................................................... 100
Table 68.GET STREAM STATUS parameter data .......................................................................................................................... 101
Table 69.Stream status descriptor format ..................................................................................................................................... 102
Table 71.Standard INQUIRY data format ....................................................................................................................................... 105
Table 73.PERIPHERAL DEVICE TYPE ................................................................................................................................................. 107
Table 74.VERSION field codes ............................................................................................................................................................ 108
Table 75.Target Port Group Support codes .................................................................................................................................. 109
Table 76.BQue and CmdQue bit combinations .......................................................................................................................... 110
Table 78.Page Control (PC) field values ......................................................................................................................................... 113
Table 79.PAGE CODE field and SUBPAGE CODE field ............................................................................................................... 114
Table 80.PCR bit, SP bit, and PC field meanings when parameter list length is zero .................................................... 115
Table 81.LOG SENSE command ........................................................................................................................................................ 117
Table 86.Page control (PC) field ........................................................................................................................................................ 122
Table 88.PERSISTENT RESERVE IN command ............................................................................................................................... 126
Table 89.PERSISTENT RESERVE IN service action codes ........................................................................................................... 126
Table 90.PERSISTENT RESERVE IN parameter data for READ KEYS .......................................................................................127
Table 91.PERSISTENT RESERVE IN data for READ RESERVATION with no reservation held ......................................... 128
Table 92.PERSISTENT RESERVE IN parameter data for READ RESERVATION with reservation ................................... 129
Table 94.Persistent reservation type codes .................................................................................................................................. 130
Table 95.PERSISTENT RESERVE IN parameter data for REPORT CAPABILITIES ................................................................. 131
Table 96.ALLOW COMMANDS field ................................................................................................................................................. 132
Table 97.Persistent Reservation Type Mask format ................................................................................................................... 133
Table 98.PERSISTENT RESERVE IN parameter data for READ FULL STATUS ...................................................................... 134
Table 99.PERSISTENT RESERVE IN full status descriptor format ............................................................................................ 135
Table 100. PERSISTENT RESERVE OUT command .......................................................................................................................... 137
Table 101. PERSISTENT RESERVE OUT service action codes ...................................................................................................... 138
Table 102. PERSISTENT RESERVE OUT parameter list ................................................................................................................... 139
Table 103. PERSISTENT RESERVE OUT specify initiator ports additional parameter data ............................................... 140
Table 104. PERSISTENT RESERVE OUT service actions and valid parameters (part 1 of 2) .............................................. 142
Table 105. PERSISTENT RESERVE OUT service actions and valid parameters (part 2 of 2) .............................................. 142
Table 106. PERSISTENT RESERVE OUT command with REGISTER AND MOVE service ...................................................... 143
Table 108. Protection information checking for READ (6) .......................................................................................................... 146
Table 113. Force unit access for read operations .......................................................................................................................... 152
Table 121. Error history BUFFER ID field ............................................................................................................................................159
Table 122. Summary of error history directory device server actions .................................................................................... 160
Table 123. BUFFER ID field and MODE SPECIFIC field meanings for the error history mode ......................................... 160
Table 124. Error history directory ........................................................................................................................................................ 161
Table 125. EHS_RETRIEVED field .......................................................................................................................................................... 162
Table 126. EHS_SOURCE field ............................................................................................................................................................... 162
SCSI Commands Reference Manual, Rev. L12
Tables
Table 127. Error history directory entry ............................................................................................................................................. 163
Table 128. BUFFER FORMAT field ........................................................................................................................................................ 163
Table 129. BUFFER SOURCE field ......................................................................................................................................................... 164
Table 134. READ CAPACITY (16) parameter data ........................................................................................................................... 169
Table 135. RC BASIS field ........................................................................................................................................................................ 169
Table 136. P_TYPE FIELD and PROT_EN bit ...................................................................................................................................... 170
Table 137. LOGICAL BLOCKS PER PHYSICAL BLOCKS EXPONENT field .................................................................................. 170
Table 138. READ DEFECT DATA (10) command ............................................................................................................................. 171
Table 139. READ DEFECT DATA (10) parameter data ................................................................................................................... 172
Table 140. READ DEFECT DATA (12) command ............................................................................................................................. 173
Table 141. READ DEFECT DATA (12) parameter data ................................................................................................................... 174
Table 142. READ LONG (10) command .............................................................................................................................................. 175
Table 143. READ LONG (16) command .............................................................................................................................................. 177
Table 145. REASSIGN BLOCKS parameter list .................................................................................................................................. 179
Table 146. REASSIGN BLOCKS short parameter list header ....................................................................................................... 179
Table 147. REASSIGN BLOCKS long parameter list header ......................................................................................................... 179
Table 153. RELEASE (10) parameter list ............................................................................................................................................. 186
Table 154. REMOVE ELEMENT AND TRUNCATE command ........................................................................................................ 187
Table 155. REPORT IDENTIFYING INFORMATION command ..................................................................................................... 188
Table 156. INFORMATION TYPE ............................................................................................................................................................ 189
Table 157. REPORT IDENTIFYING INFORMATION parameter data ...........................................................................................189
Table 158. REPORT IDENTIFYING INFORMATION SUPPORTED parameter data ................................................................. 190
Table 159. Identifying Information descriptor ................................................................................................................................ 190
Table 161. SELECT REPORT field ........................................................................................................................................................... 192
Table 162. REPORT LUNS parameter data format .......................................................................................................................... 193
Table 177. REPORT TIMESTAMP parameter data format ............................................................................................................ 207
Table 178. REQUEST SENSE command .............................................................................................................................................. 208
Table 181. RESERVE (10) ID only parameter list .............................................................................................................................. 211
Table 182. RESTORE ELEMENTS AND REBUILD command ......................................................................................................... 212
Table 183. REZERO UNIT command (01h) ........................................................................................................................................ 213
Table 185. SANITIZE service action codes ........................................................................................................................................ 215
Table 186. OVERWRITE service action parameter list ................................................................................................................... 216
Table 187. TEST field ................................................................................................................................................................................. 216
Table 188. SECURITY PROTOCOL IN command .............................................................................................................................. 218
Table 189. SECURITY PROTOCOL field in SECURITY PROTOCOL IN command ................................................................... 218
Table 190. SECURITY PROTOCOL SPECIFIC field for SECURITY PROTOCOL IN protocol 00h ......................................... 220
Table 191. Supported security protocols SECURITY PROTOCOL IN parameter data ........................................................ 221
Table 192. Certificate data SECURITY PROTOCOL IN parameter data ....................................................................................222
Table 193. Certificate data SECURITY PROTOCOL IN parameter data ....................................................................................223
Table 194. Compliance descriptor format ........................................................................................................................................ 224
Table 195. INFORMATION TYPE ............................................................................................................................................................ 224
Table 196. FIPS 140 Compliance descriptor ..................................................................................................................................... 225
Table 197. REVISION field ....................................................................................................................................................................... 226
Table 198. SECURITY PROTOCOL OUT command ......................................................................................................................... 227
Table 199. SECURITY PROTOCOL field in SECURITY PROTOCOL OUT command ............................................................... 227
Table 203. SELF-TEST CODE field ......................................................................................................................................................... 231
Table 204. SET IDENTIFYING INFORMATION command .............................................................................................................. 233
Table 205. INFORMATION TYPE code list .......................................................................................................................................... 234
Table 206. SET IDENTIFYING INFORMATION parameter list ....................................................................................................... 234
Table 207. SET TIMESTAMP command .............................................................................................................................................. 235
Table 208. SET TIMESTAMP parameter data format ..................................................................................................................... 236
Table 209. START STOP UNIT command ........................................................................................................................................... 237
Table 210. POWER CONDITION field and POWER CONDITION MODIFIER field .................................................................. 237
SCSI Commands Reference Manual, Rev. L14
Tables
Table 211. STREAM CONTROL command ......................................................................................................................................... 239
Table 212. STR_CTL field ......................................................................................................................................................................... 239
Table 213. STREAM CONTROL parameter data .............................................................................................................................. 240
Table 217. TEST UNIT READY command ........................................................................................................................................... 244
Table 218. Preferred TEST UNIT READY responses ........................................................................................................................ 244
Table 223. VRPROTECT field with BYTCHK field set to 00b - medium .................................................................................... 250
Table 224. VRPROTECT field with BYTCHK field set to 01b or 11b - medium ...................................................................... 252
Table 225. VRPROTECT field with BYTCHK field set to one 01b or 11b - data-out buffer ................................................ 254
Table 226. VRPROTECT field with BYTCHK field set to 01b or 11b - byte-by-byte comparison requirements ........ 256
Table 243. WRITE BUFFER MODE field ............................................................................................................................................... 279
Table 244. MODE SPECIFIC field ........................................................................................................................................................... 282
Table 245. Application log data WRITE BUFFER format ............................................................................................................... 284
Table 246. ERROR TYPE field .................................................................................................................................................................. 285
Table 247. CODE SET field ...................................................................................................................................................................... 286
Table 248. ERROR LOCATION FORMAT field .................................................................................................................................... 286
Table 249. WRITE LONG (10) command ............................................................................................................................................ 287
Table 250. WRITE LONG (16) command ............................................................................................................................................ 288
Table 251. WRITE SAME (10) command ............................................................................................................................................ 290
Table 252. ANCHOR bit, UNMAP bit, and ANC_SUP bit relationships .................................................................................... 291
SCSI Commands Reference Manual, Rev. L15
Tables
Table 253. WRITE SAME (16) command ............................................................................................................................................ 292
Table 254. WRITE SAME (32) command ............................................................................................................................................ 293
Table 258. Typical 16-byte zoned block device CDB format with no data transfer .......................................................... 296
Table 259. CLOSE ZONE command ..................................................................................................................................................... 298
Table 260. CLOSE ZONE command processing .............................................................................................................................. 298
Table 261. FINISH ZONE command ....................................................................................................................................................299
Table 262. FINISH ZONE command processing .............................................................................................................................. 300
Table 263. OPEN ZONE command ......................................................................................................................................................301
Table 264. OPEN ZONE command processing ............................................................................................................................... 302
Table 271. REPORT ZONE command .................................................................................................................................................. 307
Table 272. REPORT REALMS REPORTING OPTIONS field ............................................................................................................. 307
Table 273. REPORT REALMS parameter data ................................................................................................................................... 308
Table 274. Zone domain descriptor .................................................................................................................................................... 309
Table 275. REPORT ZONE command .................................................................................................................................................. 311
Table 276. REPORT ZONES REPORTING OPTIONS field ................................................................................................................ 312
Table 277. REPORT ZONES parameter data ..................................................................................................................................... 313
Table 278. SAME field description ....................................................................................................................................................... 314
Table 279. Zone descriptor format ..................................................................................................................................................... 314
Table 280. Zone descriptor ZONE TYPE field ................................................................................................................................... 315
Table 281. Zone descriptor ZONE CONDITION field ..................................................................................................................... 315
Table 295. Address Field for Short Logical Block Address Format .......................................................................................... 329
Table 296. Address Field for Physical Sector Address Format ................................................................................................... 329
Table 305. FORMAT AND LINKING field ............................................................................................................................................. 339
Table 306. Parameter control byte values for bounded data counter parameters ........................................................... 340
Table 307. Parameter control byte values for unbounded data counter parameters .....................................................341
Table 308. Parameter control byte values for ASCII format list log parameters ................................................................. 341
Table 309. Parameter control byte values for binary format list log parameters ...............................................................342
Table 310. Keywords for resetting or changing log parameters .............................................................................................. 342
Table 313. General usage application client parameter data ................................................................................................... 344
Table 316. Background Scan Status parameter format ............................................................................................................... 346
Table 317. Background Scan Status field .......................................................................................................................................... 347
Table 318. Background Scan parameter format ............................................................................................................................ 348
Table 319. REASSIGN STATUS field ..................................................................................................................................................... 349
Table 332. Writes From Cache Memory log parameter ............................................................................................................... 357
Table 333. Time From Last Hard Reset log parameter ................................................................................................................. 358
Table 334. Time Interval log parameter ............................................................................................................................................ 359
Table 335. Time interval descriptor .................................................................................................................................................... 360
Table 354. Format Status log page parameter codes .................................................................................................................. 376
Table 355. Format Status log page ..................................................................................................................................................... 376
Table 356. Format Data Out log parameter format ...................................................................................................................... 377
Table 357. Grown Defects During Certification log parameter format ................................................................................. 378
Table 358. Total Blocks Reassigned During Format log parameter format .......................................................................... 379
Table 359. Total New Blocks Reassigned log parameter format .............................................................................................. 380
Table 360. Power On Minutes Since Format log parameter format ....................................................................................... 381
Table 363. Informational exceptions general parameter data ................................................................................................. 383
Table 382. Power Condition Transitions log page ........................................................................................................................ 397
Table 383. Power Condition Transitions log parameter format ............................................................................................... 398
Table 384. Protocol-Specific Port log page for SAS ...................................................................................................................... 399
Table 385. Protocol-Specific Port log parameter for SAS ............................................................................................................ 400
Table 386. SAS phy log descriptor ....................................................................................................................................................... 401
Table 387. Device type field .................................................................................................................................................................. 402
Table 388. Reason field definition ....................................................................................................................................................... 403
Table 389. NEGOTIATED LOGICAL LINK RATE field ....................................................................................................................... 403
Table 392. Self-test results log parameter format ......................................................................................................................... 406
Table 393. SELF-TEST RESULTS field ................................................................................................................................................... 407
Table 394. Solid State Media log parameters .................................................................................................................................. 409
Table 395. Solid State Media log page .............................................................................................................................................. 409
Table 396. Percentage Used Endurance Indicator log parameter format ............................................................................ 410
Table 397. Solid State Media log parameters .................................................................................................................................. 411
Table 406. Workload Utilization log parameter format ............................................................................................................... 419
Table 407. WORKLOAD UTILIZATION field ....................................................................................................................................... 419
Table 408. Utilization Rate Based on Date and Time log parameter format ........................................................................420
Table 409. DATE AND TIME BASED UTILIZATION RATE field ..................................................................................................... 420
Table 412. Maximum Open Zones log parameter ......................................................................................................................... 422
Table 413. Maximum Explicitly Open Zones log parameter ...................................................................................................... 423
Table 414. Maximum Implicitly Open Zones log parameter ..................................................................................................... 424
Table 415. Maximum Empty Zones log parameter ....................................................................................................................... 425
Table 416. Maximum Non-Sequential Zones log parameter .................................................................................................... 426
Table 417. Zones Emptied log parameter ........................................................................................................................................ 427
Table 428. Short LBA mode parameter block descriptor ............................................................................................................ 438
Table 429. Long LBA mode parameter block descriptor ............................................................................................................ 440
Table 430. Page_0 mode page format .............................................................................................................................................. 442
Table 431. SUB_PAGE mode page format ........................................................................................................................................ 442
Table 432. Application Tag mode page ............................................................................................................................................ 444
Table 433. Application Tag descriptor format ................................................................................................................................ 445
Table 434. Background Control mode page .................................................................................................................................... 446
Table 435. Background Operation Control mode page .............................................................................................................. 448
Table 436. BO_MODE field ..................................................................................................................................................................... 448
Table 443. PERFORMANCE VERSUS LATENCY CONTROLS field ................................................................................................ 456
Table 444. T2 command duration limit descriptor format ......................................................................................................... 456
Table 445. T2CDLUNITS field ................................................................................................................................................................. 457
Table 446. Max time limit policy actions ........................................................................................................................................... 458
Table 447. Max time limit policy actions ........................................................................................................................................... 459
Table 448. CONFORMANCE TARGET field ......................................................................................................................................... 459
Table 450. Control mode page ............................................................................................................................................................. 461
Table 451. Task set type (TST) field ..................................................................................................................................................... 461
Table 452. QUEUE ALGORITHM MODIFIER field ............................................................................................................................. 462
Table 453. Queue error management (QERR) field ....................................................................................................................... 463
Table 454. Unit attention interlocks control (UA_INTLCK_CTRL) field ................................................................................... 464
Table 455. AUTOLOAD MODE field ..................................................................................................................................................... 466
Table 456. Control Extension mode page ........................................................................................................................................ 467
Table 457. Disconnect-Reconnect mode page for SAS ............................................................................................................... 469
Table 458. Format Parameters page (03h) ....................................................................................................................................... 471
Table 466. Threshold descriptor format ............................................................................................................................................481
Table 467. THRESHOLD TYPE field ...................................................................................................................................................... 481
Table 468. THRESHOLD ARMING field ............................................................................................................................................... 482
Table 469. Power Condition mode page .......................................................................................................................................... 483
Table 470. PM_BG_PRECEDENCE field ............................................................................................................................................... 484
Table 471. CCF_IDLE field ....................................................................................................................................................................... 486
Table 472. CCF_STANDBY field ............................................................................................................................................................ 486
Table 473. CCF_STOPPED field ............................................................................................................................................................. 486
Table 474. Power Consumption mode page ................................................................................................................................... 487
Table 475. ACTIVE LEVEL field ............................................................................................................................................................... 488
Table 477. Combined error recovery bit descriptions ................................................................................................................. 491
Table 478. Protocol-Specific Logical Unit mode page for SAS .................................................................................................. 494
Table 479. Protocol-Specific Port mode page for SAS ................................................................................................................. 495
Table 480. I_T NEXUS LOSS TIME values ........................................................................................................................................... 496
Table 481. SAS - Phy Control And Discover subpage ................................................................................................................... 497
Table 482. SAS phy mode descriptor ................................................................................................................................................. 498
Table 483. The HARDWARE MINIMUM & MAXIMUM PHYSICAL LINK RATE field values ................................................. 500
Table 484. The PROGRAMMED MINIMUM and MAXIMUM PHYSICAL LINK RATE field values ...................................... 500
Table 485. Shared Port Control Mode Page ..................................................................................................................................... 501
Table 486. Enhanced Phy Control mode page ............................................................................................................................... 502
Table 487. Enhanced phy control mode descriptor ..................................................................................................................... 503
Table 488. SAS Transceiver Control (Out) subpage ...................................................................................................................... 505
Table 489. Transceiver Controls Mode descriptor (1.5Gb, 3Gb and 6Gb Link Rate) ......................................................... 507
Table 490. Transceiver Controls descriptor (12Gb Link Rate) .................................................................................................... 507
Table 491. Controllable Link Rates ...................................................................................................................................................... 508
Table 492. DRIVER STRENGTH CONTROL or C1 PRE-CURSOR CONTROL (12G Mode Only) values .............................. 508
Table 493. DRIVER EMPHASIS CONTROL or C2 AMPLITUDE CONTROL (12G Mode Only) .............................................. 509
Table 494. DRIVER SLEW RATE CONTROL or C3 POST CURSOR CONTROL (12G mode only) ........................................ 509
Table 495. Receiver Threshold Control .............................................................................................................................................. 510
Table 496. Receiver Equalization Gain Control field ..................................................................................................................... 510
Table 497. RESET and IREC bit function ............................................................................................................................................. 511
Table 498. SAS - Transceiver Control (In) subpage ........................................................................................................................ 512
Table 501. Controllable Link Rates field ............................................................................................................................................ 515
Table 510. Medium Rotation Rate field ............................................................................................................................................. 528
Table 511. WABEREQ field ...................................................................................................................................................................... 529
Table 512. WACEREQ field ...................................................................................................................................................................... 529
Table 513. Product Type field ............................................................................................................................................................... 529
Table 514. ZONED field ........................................................................................................................................................................... 530
Table 515. Nominal Form Factor Field ............................................................................................................................................... 530
Table 517. UTILIZATION TYPE field ..................................................................................................................................................... 531
Table 518. UTILIZATION UNITS Field .................................................................................................................................................. 532
Table 519. UTILIZATION INTERVAL Field ........................................................................................................................................... 532
Table 521. Transfer limits for commands .......................................................................................................................................... 535
Table 528. ASSOCIATION field .............................................................................................................................................................. 543
Table 529. IDENTIFIER Type field ......................................................................................................................................................... 544
Table 530. Device Identification page example ............................................................................................................................. 545
Table 531. Extended INQUIRY Data VPD page ............................................................................................................................... 546
Table 532. SPT field ................................................................................................................................................................................... 547
Table 533. ACTIVATE MICROCODE field ............................................................................................................................................ 547
Table 536. Drive ID bit .............................................................................................................................................................................. 554
Table 538. LBPRZ field ............................................................................................................................................................................. 556
Table 539. MINIMUM PERCENTAGE field .......................................................................................................................................... 556
Table 540. Provisioning Type field ...................................................................................................................................................... 557
Table 541. MINIMUM PERCENTAGE field .......................................................................................................................................... 557
Table 544. MODE PAGE POLICY field .................................................................................................................................................. 559
Table 545. Power Condition VPD page ............................................................................................................................................. 560
Table 546. Power Consumption VPD page ...................................................................................................................................... 562
SCSI Commands Reference Manual, Rev. L22
Tables
Table 547. Power consumption descriptor format ....................................................................................................................... 563
Table 548. POWER CONSUMPTION UNITS field .............................................................................................................................. 563
Table 549. Protocol Specific Logical Unit Information VPD page for SAS SSP .................................................................... 564
Table 550. Logical unit information descriptor for SAS SSP ...................................................................................................... 565
Table 551. Protocol Specific Port Information VPD page for SAS SSP .................................................................................... 566
Table 552. Logical unit information descriptor for SAS SSP ...................................................................................................... 567
Table 553. SAS phy information descriptor for SAS SSP ............................................................................................................. 568
Table 557. SCSI port designation descriptor ................................................................................................................................... 571
Table 558. Relative Port Identifier field .............................................................................................................................................. 572
Table 559. Target port Descriptor ....................................................................................................................................................... 572
Table 560. Supported Vital Product Data pages ............................................................................................................................ 573
Table 561. Unit Serial Number page (80h) ....................................................................................................................................... 574
Table 563. ZONED BLOCK DEVICE EXTENSION field ..................................................................................................................... 576
SCSI Commands Reference Manual, Rev. L23
www.seagate.com Definitions, Symbols, Abbreviations, Keywords, And Conventions
1.Definitions, Symbols, Abbreviations, Keywords, And Conventions
This clause contains the definitions, symbols, abbreviations, keywords and, conventions used throughout this manual. These items are from the
American National Standards Institute T10 committee standards.
Applicable Documents:
INCITS 515 SCSI Architecture Model - 6 (SAM-6) Revision 05
INCITS 534 Serial Attached SCSI - 4.1 (SAS-4.1) Revision 02
INCITS 538 SAS Protocol Layer - 5 (SPL-5) Revision 09
SCSI Commands Reference Manual, Rev. L24
www.seagate.com Definitions, Symbols, Abbreviations, Keywords, And Conventions
1.1Definitions
Access control list (ACL)
The data used by a SCSI target device to configure access rights for initiator ports according to the access controls state of the SCSI target
device.
Access control list entry (ACE)
One entry in the access control list.
Access controls
An optional SCSI target device feature that restricts initiator port access to specific logical units and modifies the information about logical
units in the parameter data of the INQUIRY and REPORT LUNS commands.
Access controls coordinator
The entity within a SCSI target device that coordinates the management and enforcement of access controls for all logical units within the SCSI
target device. The access controls coordinator is always addressable through the ACCESS CONTROLS well known logical unit and LUN 0.
active power condition
When a device server is capable of responding to all of its supported commands, including media access requests, without delay.
additional sense code
A combination of the ADDITIONAL SENSE CODE and ADDITIONAL SENSE CODE QUALIFIER fields in the sense data.
Application client
An object that is the source of SCSI commands. Further definition of an application client may be found in SAM-6.
Attribute
A single unit of MAM information.
Auto contingent allegiance (ACA)
The task set condition established following the return of a CHECK CONDITION status when the NACA bit is set to one in the CONTROL byte. A
detailed definition of ACA may be found in 2.2.7.
Blocked task
A task that is in the blocked state. Tasks become blocked when an ACA condition occurs. The blocked state ends when the ACA condition is
cleared. A detailed definition of the blocked task state may be found in SAM-6.
Byte
A sequence of eight contiguous bits considered as a unit.
Cache
See cache memory.
Cache memory
A temporary and often volatile data storage area outside the area accessible by application clients that may contain a subset of the data stored
in the non-volatile data storage area.
Check data
Information contained within a redundancy group that may allow lost or destroyed XOR-protected data to be recreated.
Command
A request describing a unit of work to be performed by a device server. A detailed definition of a command may be found in SAM-6.
Command descriptor block (CDB)
The structure used to communicate commands from an application client to a device server. A CDB may have a fixed length of up to 16 bytes or
a variable length of between 12 and 260 bytes.
Command standard
A SCSI standard that defines the model, commands, and parameter data for a device type (e.g., SBC-4, SSC-3, SMC-3, MMC-5, or SES-3).
Company_id
Synonym for OUI.
Copy manager
The device server that receives an EXTENDED COPY command and performs the operation requested.
SCSI Commands Reference Manual, Rev. L25
www.seagate.com Definitions, Symbols, Abbreviations, Keywords, And Conventions
Copy target device
The name given by the EXTENDED COPY command to a source or destination logical unit (i.e., a copy target device is a logical unit, not a SCSI
target device).
Cyclic redundancy check (CRC)
An error checking mechanism that checks data integrity by computing a polynomial algorithm based checksum.
Data defect list (DLIST)
A list of defects sent by the application client to the device server during a FORMAT UNIT command.
Data-in buffer
The buffer specified by the application client to receive data from the device server during the processing of a command.
Data-out buffer
The buffer specified by the application client to supply data that is sent from the application client to the device server during the processing of
a command.
Default protection information
Values placed into protection information fields if an application client does not specify specific protection information values.‘
Deferred error
A CHECK CONDITION status and sense data that is returned as the result of an error or exception condition that occurred during processing of
a previous command for which GOOD, CONDITION MET, INTERMEDIATE, and INTERMEDIATE-CONDITION MET status has already been returned.
Device server
An object within a logical unit that processes SCSI tasks according to the rules of task management. A detailed definition of a device server may
be found in SAM-6.
Device service request
A request, submitted by an application client, conveying a SCSI command to a device server. A detailed definition of a device service request
may be found in SAM-6.
Device service response
The response returned to an application client by a device server on completion of a SCSI command. A detailed definition of a device service
response may be found in SAM-6.
Device type
The type of peripheral device (i.e., device model) implemented by the device server and indicated by the contents of the PERIPHERAL DEVICE
TYPE field in the standard INQUIRY data.
Direct-access block device
A device that is capable of containing data stored in blocks that each have a unique logical block address.
Domain
An I/O system consisting of a set of SCSI devices that interact with one another by means of a service delivery subsystem.
Element
An addressable physical component of a medium changer SCSI device that may serve as the location of a removable unit of data storage
medium. A detailed definition of an element may be found in SMC-3.
Enabled task state
The only task state in which a task may make progress towards completion. A detailed definition of the enabled task state may be found in
SAM-6.
Error correcting code (ECC)
An error checking mechanism that checks data integrity and enables some errors in the data to be corrected.
Error history I_T nexus
An I_T nexus for which the device server has reserved access to the error history snapshot (see SPC-6).
Error history snapshot
The contents of the error history at a specific point in time (see SPC-6).
Exclusive-or (XOR)
A Boolean arithmetic function on two binary input values that results in an output value of 1 if one and only one of the input values is 1.
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Extended Unique Identifier, a 48-bit globally unique identifier (EUI-48)
The IEEE maintains a tutorial describing EUI-48 at http://standards.ieee.or
Extended Unique Identifier, a 64-bit globally unique identifier (EUI-64)
The IEEE maintains a tutorial describing EUI-64 at http://standards.ieee.org/regauth/oui/tutorials/EUI64.html.
Extent
A fixed set of logical blocks occupying contiguous logical block addresses on a single logical unit.
Faulted I_T nexus
The I_T nexus on which a CHECK CONDITION status was returned that resulted in the establishment of an ACA. The faulted I_T nexus condition
is cleared when the ACA condition is cleared.
Field
A group of one or more contiguous bits, a part of a larger structure such as a CDB or sense data.
Format corrupt
a vendor-specific condition in which the application client may not be able to perform read operations, write operations, or verify operations.
Grown defect list (GLIST)
All defects sent by the application client to the device server.
Hard reset
A condition resulting from the events defined by SAM-6 in which the SCSI device performs the hard reset operations described in SAM-6,
SPC-6, and the applicable command standards.
Host
A SCSI device with the characteristics of a primary computing device, typically a personal computer, workstation, server, minicomputer, mainframe computer, or auxiliary computing device. A host includes one or more SCSI initiator devices.
IEEE company_id
Synonym for OUI.
I_T nexus
A nexus between a SCSI initiator port and a SCSI target port.
I_T nexus loss
A condition resulting from the events defined by SAM-6 in which the SCSI device performs the I_T nexus loss operations described in SAM-6,
SPC-6, and the applicable command standards.
I_T_L nexus
A nexus between a SCSI initiator port, a SCSI target port, and a logical unit.
I_T_L_Q nexus transaction
The information transferred between SCSI ports in a single data structure with defined boundaries (e.g., an information unit).
Idle power condition
When a device server is capable of responding to all of its supported commands, including media access requests, but commands may take
longer to complete than when in the active power condition.
Implicit head of queue
An optional processing model for specified commands wherein the specified commands may be treated as if they had been received with a
HEAD OF QUEUE task attribute.
Initiator device name
A SCSI device name of a SCSI initiator device or of a SCSI target/initiator device when operating as a SCSI initiator device.
Initiator port
Synonymous with SCSI initiator port.
Initiator port identifier
A value by which a SCSI initiator port is referenced within a SCSI domain.
Initiator port name
A SCSI port name of a SCSI initiator port or of a SCSI target/initiator port when operating as a SCSI initiator port.
Internet protocol domain name
The name of a computer or hierarchy of computers within the domain name system defined by the IETF (see RFC 1035 and RFC 1591). The
Internet Assigned Numbers Authority maintains a list of domain name assignments at http://www.iana.or
g/regauth/oui/tutorials/EUI48.html.
g/assignments/domain-names.
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Internet protocol number
A coded value assigned to identify protocols that layer on the Internet protocol (see RFC 791). The Internet protocol number assigned to the
transmission control protocol (TCP, see RFC 793) is six. The Internet Assigned Numbers Authority maintains a list of Internet protocol number
assignments at http://www.iana.org/assignments/protocol-numbers.
Least significant bit (LSB)
In a binary code, the bit or bit position with the smallest numerical weighting in a group of bits that, when taken as a whole, represent a numerical value (e.g., in the number 0001b, the bit that is set to one).
Left-aligned
A type of field containing ASCII data in which unused bytes are placed at the end of the field (highest offset) and are filled with ASCII space
(20h) characters.
Logical block
A set of data bytes accessed and referenced as a unit.
Logical block address (LBA)
The value used to reference a logical block.
Logical unit
An externally addressable entity within a SCSI target device that implements a SCSI device model and contains a device server. A detailed definition of a logical unit may be found in SAM-6.
Logical unit access control descriptor (LUACD)
The structure within an ACE that identifies a logical unit to which access is allowed and specifies the LUN by which the logical unit is to be
accessed.
Logical unit certification list (CLIST)
Defects detected by the device server during an optional certification process performed during the FORMAT UNIT command.
Logical unit inventory
The list of the logical unit numbers reported by a REPORT LUNS command.
Logical unit number (LUN)
An encoded 64-bit identifier for a logical unit. A detailed definition of a logical unit number may be found in SAM-6.
Logical unit reset
A condition resulting from the events defined by SAM-6 in which the logical unit performs the logical unit reset operations described in SAM-6,
SPC-6, and the applicable command standards.
Media
Plural of Medium
Medium
A physical entity that stores data in a nonvolatile manner (i.e., retained through a power cycle) in accordance with commands processed by the
device server.
Medium auxiliary memory (MAM)
An auxiliary memory residing on a medium that is accessible to the device server (e.g., a tape cartridge). Medium auxiliary memory may be
nonvolatile and independent of the main function of the device server.
Most significant bit (MSB)
In a binary code, the bit or bit position with the largest numerical weighting in a group of bits that, when taken as a whole, represent a numerical value (e.g., in the number 1000b, the bit that is set to one).
Name
A label of an object that is unique within a specified context and should never change (e.g., the term name and worldwide identifier (WWID)
may be interchangeable).
Network address authority (NAA)
A field within a name that specifies the format and length of that name. See FC-FS.
Nexus
A relationship between two SCSI devices, and the SCSI initiator port and SCSI target port objects within those SCSI devices.
Non-volatile cache
Cache that retains data through power cycles.
Non-volatile cache memory
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Cache memory that retains data through power cycles.
Non-volatile medium
A physical storage medium that retains data written to it for subsequent read operations through power cycles (e.g., a disk within a device that
stores data as magnetic field changes that do not require device power to exist).
Null-padded
A type of field in which unused bytes are placed at the end of the field (i.e., highest offset) and are filled with ASCII null (00h) characters.
Null-terminated
A type of field in which the last used byte (i.e., highest offset) is required to contain an ASCII null (00h) character.
One
The logical true condition of a variable.
Operation Code
The first byte of a SCSI CDB shall contain an operation code identifying the operation being requested by the CDB.
Organizationally unique identifier (OUI)
A numeric identifier that is assigned by the IEEE such that no assigned identifiers are identical. OUI is equivalent to company_id or IEEE company_id. The IEEE prefers OUI for EUI-48 identifiers and company_id for EUI-64 identifiers. However, the numeric identifier is called an OUI when it
is assigned by the IEEE. The IEEE maintains a tutorial describing the OUI at http://standards.ieee.org/re
Page
A regular parameter structure (or format) used by several commands. These pages are identified with a value known as a page code.
Persist through power loss
An optional capability associated with some features that allows an application client to request that a device server maintain information
regarding that feature across power failures.
Persistent reservation holder
The I_T nexus(es) that are allowed to release or change a persistent reservation without preempting it.
Power cycle
Power being removed from and later applied to a SCSI device.
Power on
A condition resulting from the events defined by SAM-6 in which the SCSI device performs the power on operations described in SAM-6, SPC-6,
and the applicable command standards.
Primary defect list (PLIST)
The list of defects that are considered permanent defects.
Protection information
Fields appended to each logical block that contain a cyclic redundancy check (CRC), an application tag, and a reference tag.
Protocol identifier
A coded value used in various fields to identify the protocol to which other fields apply.
Protocol specific
A requirement that is defined by a SCSI transport protocol standard. A detailed definition of protocol specific may be found in SAM-6.
Protocol standard
A SCSI standard that defines SCSI transport protocol (e.g., SAS or SBP-3.
Proxy token
An identifier for a logical unit that may be used to gain temporary access to that logical unit in the presence of access controls.
Redundancy group
A grouping of XOR-protected data and associated check data into a single type of data redundancy (see SCC-2). SPC-6 only supports the XOR
type of redundancy.
Request for comment (RFC)
The name given to standards developed by the Internet Engineering Task Force.
gauth/oui/.
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Registered
The condition that exists for an I_T nexus following the successful completion of a PERSISTENT RESERVE OUT command with a REGISTER service action, REGISTER AND IGNORE EXISTING KEY service action, or REGISTER AND MOVE service action and lasting until the registration is
removed.
Registrant
An I_T nexus that is registered.
Right-aligned
A type of field containing ASCII data in which unused bytes are placed at the start of the field (i.e., lowest offset) and are filled with ASCII space
(20h) characters.
Relative port identifier
An identifier for a SCSI port that is unique within a SCSI device. Application clients may use the SCSI Ports VPD page to determine relative port
identifier values.
Relative initiator port identifier
A relative port identifier for a SCSI initiator port.
Relative target port identifier
A relative port identifier for a SCSI target port.
SCSI device
A device that contains one or more SCSI ports that are connected to a service delivery subsystem and supports a SCSI application protocol.
SCSI device name
A name of a SCSI device that is world wide unique within the protocol of a SCSI domain in which the SCSI device has SCSI ports. The SCSI device
name may be made available to other SCSI devices or SCSI ports in protocol specific ways.
SCSI domain
The interconnection of two or more SCSI devices and a service delivery subsystem. A detailed definition of a SCSI Domain may be found in
SAM-6.
SCSI initiator device
A SCSI device containing application clients and SCSI initiator ports that originate device service and task management requests to be processed by a SCSI target device and receives device service and task management responses from SCSI target devices.
SCSI initiator port
A SCSI initiator device object acts as the connection between application clients and the service delivery subsystem through which requests
and responses are routed.
SCSI port
A port of a SCSI device that connects the application client, device server or task manager to the service delivery subsystem.
SCSI port identifier
A value by which a SCSI port is referenced within a domain. The SCSI port identifier is either an initiator port identifier or a target port identifier.
SCSI port name
A name of a SCSI port that is world wide unique within the protocol of the SCSI domain of that SCSI port. The name may be made available to
other SCSI devices or SCSI ports in that SCSI domain in protocol specific ways.
SCSI Ports VPD page
A VPD page that allows retrieval of information about all the SCSI ports in a SCSI target device or SCSI target/initiator device.
SCSI target device
A SCSI device containing logical units and SCSI target ports that receives device service and task management requests for processing and
sends device service and task management responses to SCSI initiator devices.
SCSI target port
A SCSI target device object that acts as the connection between device servers and task managers and the service delivery subsystem through
which requests and responses are routed.
SCSI transport protocol standard
A SCSI standard that defines a SCSI transport protocol (e.g., SAS, SRP, or SBP-3).
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