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    ANSI INCITS405-2005 Information technology - SCSI Block Commands - 2 (SBC-2)《信息技术.SCSI块指令.2(SBC-2)》.pdf

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    ANSI INCITS405-2005 Information technology - SCSI Block Commands - 2 (SBC-2)《信息技术.SCSI块指令.2(SBC-2)》.pdf

    1、American National StandardDeveloped byfor Information Technology SCSI Block Commands - 2 (SBC-2)ANSI INCITS 405-2005ANSIINCITS405-2005Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-

    2、,-,-DedicationThis standard is dedicated to the memory of Gene E. Milligan, who was the original editor.Mr. Milligan was a dedicated and energetic participant on several INCITS Technical Committees, including T10, T11, T12,and T13. He chaired both T12 and T13 and was the International Representative

    3、 for T10, T11, and T12.Mr. Milligan graduated in 1959 from UCLA with a degree in Electrical Engineering and was employed by Seagate Technologyfor over 30 years. His interests included flying, water and snow skiing, and tinkering with anything that needed repair. He wasalso an avid sports fan.Memoria

    4、l gifts may be made to Habitat for Humanity.Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSIINCITS 405-2005American National Standardfor Information Technology SCSI Block Com

    5、mands - 2 (SBC-2)SecretariatInformation Technology Industry CouncilApproved May 19, 2005American National Standards Institute, Inc.AbstractThis standard specifies the functional requirements for the SCSI Block Commands - 2 (SBC-2) command set. SBC-2 permits SCSI block logical units such as rigid dis

    6、ks to attach to computers and provides the definition for their use.This standard maintains a high degree of compatibility with the SCSI Block Commands (SBC) command set, ANSI INCITS 306-1998, and while providing additional functions, is not intended to require changes to presently installed devices

    7、 or existing software.Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Approval of an American National Standard requires review by ANSI that therequirements for due process, cons

    8、ensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when, in the judgement of the ANSI Board ofStandards Review, substantial agreement has been reached by directly andmaterially affected interests. Substantial agreement means much more thana simple

    9、 majority, but not necessarily unanimity. Consensus requires that allviews and objections be considered, and that a concerted effort be madetowards their resolution.The use of American National Standards is completely voluntary; theirexistence does not in any respect preclude anyone, whether he has

    10、approvedthe standards or not, from manufacturing, marketing, purchasing, or usingproducts, processes, or procedures not conforming to the standards.The American National Standards Institute does not develop standards andwill in no circumstances give an interpretation of any American NationalStandard

    11、. Moreover, no person shall have the right or authority to issue aninterpretation of an American National Standard in the name of the AmericanNational Standards Institute. Requests for interpretations should beaddressed to the secretariat or sponsor whose name appears on the titlepage of this standa

    12、rd.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any time. The procedures of the American National StandardsInstitute require that action be taken periodically to reaffirm, revise, orwithdraw this standard. Purchasers of American National Standards mayreceive current

    13、information on all standards by calling or writing the AmericanNational Standards Institute.American National StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2005 by Information Technology Industry Council (ITI)All rights reserved.No pa

    14、rt of this publication may be reproduced in anyform, in an electronic retrieval system or otherwise,without prior written permission of ITI, 1250 Eye Street NW, Washington, DC 20005. Printed in the United States of AmericaCAUTION: The developers of this standard have requested that holders of patent

    15、s that may berequired for the implementation of the standard disclose such patents to the publisher. However,neither the developers nor the publisher have undertaken a patent search in order to identifywhich, if any, patents may apply to this standard. As of the date of publication of this standarda

    16、nd following calls for the identification of patents that may be required for the implementation ofthe standard, no such claims have been made. No further patent search is conducted by the de-veloper or publisher in respect to any standard it processes. No representation is made or impliedthat licen

    17、ses are not required to avoid infringement in the use of this standard.Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright American National Standards Institute Provided by

    18、 IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ContentsPageForeword .ixIntroduction xi1 Scope. 12 Normative References . 32.1 Normative references overview . 32.2 Approved references 32.3 References under development. 43 Definitions, sy

    19、mbols, abbreviations, keywords, and conventions 53.1 Definitions 53.2 Symbols and abbreviations 73.3 Keywords . 83.4 Conventions. 84 Direct-access block device type model 104.1 Direct-access block device type model overview. 104.2 Media examples. 104.2.1 Media examples overview 104.2.2 Rotating medi

    20、a. 104.2.3 Memory media . 114.3 Removable medium. 114.3.1 Removable medium overview 114.3.2 Removable medium with an attached media changer. 114.4 Logical blocks 124.5 Ready state 124.6 Initialization 134.7 Write protection 134.8 Medium defects 144.9 Write failures 144.10 Caches. 154.11 Implicit HEA

    21、D OF QUEUE command processing 164.12 Reservations 164.13 Error reporting 184.13.1 Error reporting overview. 184.13.2 Block commands sense data descriptor 194.14 Model for XOR commands. 194.14.1 Model for XOR commands overview . 19i4.14.2 Storage array controller supervised XOR operations 204.14.2.1

    22、Storage array controller supervised XOR operations overview . 20Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page4.14.2.2 Update write operation. 204.14.2.3 Regenerate operati

    23、on 204.14.2.4 Rebuild operation. 214.14.3 Array subsystem considerations 214.14.3.1 Array subsystem considerations overview. 214.14.3.2 Buffer full status handling 214.14.3.3 Access to an inconsistent stripe 214.14.4 XOR data retention requirements 224.15 START STOP UNIT and power conditions 224.15.

    24、1 START STOP UNIT and power conditions overview. 224.15.2 START STOP UNIT and power conditions state machine 234.15.2.1 START STOP UNIT and power conditions state machine overview . 234.15.2.2 SSU_PC0:Powered_on state 244.15.2.2.1 SSU_PC0:Powered_on state description 244.15.2.2.2 Transition SSU_PC0:

    25、Powered_on to SSU_PC1:Active 244.15.2.2.3 Transition SSU_PC0:Powered_on to SSU_PC4:Stopped. 244.15.2.3 SSU_PC1:Active state. 244.15.2.3.1 SSU_PC1:Active state description 244.15.2.3.2 Transition SSU_PC1:Active to SSU_PC2:Idle. 244.15.2.3.3 Transition SSU_PC1:Active to SSU_PC3:Standby . 244.15.2.3.4

    26、Transition SSU_PC1:Active to SSU_PC4:Stopped . 244.15.2.4 SSU_PC2:Idle state. 244.15.2.4.1 SSU_PC2:Idle state description 244.15.2.4.2 Transition SSU_PC2:Idle to SSU_PC1:Active. 254.15.2.4.3 Transition SSU_PC2:Idle to SSU_PC3:Standby . 254.15.2.4.4 Transition SSU_PC2:Idle to SSU_PC4:Stopped . 254.15

    27、.2.5 SSU_PC3:Standby state . 254.15.2.5.1 SSU_PC3:Standby state description . 254.15.2.5.2 Transition SSU_PC3:Standby to SSU_PC1:Active . 254.15.2.5.3 Transition SSU_PC3:Standby to SSU_PC2:Idle . 254.15.2.5.4 Transition SSU_PC3:Standby to SSU_PC4:Stopped 254.15.2.6 SSU_PC4:Stopped state . 264.15.2.6

    28、.1 SSU_PC4:Stopped state description. 264.15.2.6.2 Transition SSU_PC4:Stopped to SSU_PC1:Active . 264.15.2.6.3 Transition SSU_PC4:Stopped to SSU_PC2:Idle . 264.15.2.6.4 Transition SSU_PC4:Stopped to SSU_PC3:Standby 264.16 Protection information model . 264.16.1 Protection information overview. 264.1

    29、6.2 Protection information format. 274.16.3 Logical block guard 274.16.3.1 Logical block guard overview. 274.16.3.2 CRC generation . 284.16.3.3 CRC checking 294.16.3.4 CRC test cases 294.16.4 Application of protection information 294.16.5 Protection information and commands 294.17 Grouping function

    30、305 Commands for direct-access block devices 31ii5.1 Commands for direct-access block devices overview . 31Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page5.2 FORMAT UNIT com

    31、mand 345.2.1 FORMAT UNIT command overview. 345.2.2 FORMAT UNIT parameter list 385.2.2.1 FORMAT UNIT parameter list overview. 385.2.2.2 Parameter list header. 385.2.2.3 Initialization pattern descriptor . 405.2.2.4 Address descriptor formats 425.2.2.4.1 Address descriptor formats overview. 425.2.2.4.

    32、2 Short block format address descriptor . 435.2.2.4.3 Long block format address descriptor 435.2.2.4.4 Bytes from index format address descriptor. 435.2.2.4.5 Physical sector format address descriptor . 445.3 PRE-FETCH (10) command 445.4 PRE-FETCH (16) command 455.5 READ (6) command . 465.6 READ (10

    33、) command. 475.7 READ (12) command. 515.8 READ (16) command. 525.9 READ (32) command. 525.10 READ CAPACITY (10) command 545.10.1 READ CAPACITY (10) overview 545.10.2 READ CAPACITY (10) parameter data . 545.11 READ CAPACITY (16) command 555.11.1 READ CAPACITY (16) command overview. 555.11.2 READ CAPA

    34、CITY (16) parameter data . 565.12 READ DEFECT DATA (10) command . 565.12.1 READ DEFECT DATA (10) command overview 565.12.2 READ DEFECT DATA (10) parameter data 575.13 READ DEFECT DATA (12) command . 585.13.1 READ DEFECT DATA (12) command overview 585.13.2 READ DEFECT DATA (12) parameter data 595.14

    35、READ LONG (10) command 595.15 READ LONG (16) command 605.16 REASSIGN BLOCKS command 615.16.1 REASSIGN BLOCKS command overview . 615.16.2 REASSIGN BLOCKS parameter list 615.17 START STOP UNIT command 625.18 SYNCHRONIZE CACHE (10) command . 645.19 SYNCHRONIZE CACHE (16) command . 655.20 VERIFY (10) co

    36、mmand 665.21 VERIFY (12) command 75iii5.22 VERIFY (16) command 76Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page5.23 VERIFY (32) command 765.24 WRITE (6) command . 785.25 WR

    37、ITE (10) command . 785.26 WRITE (12) command . 825.27 WRITE (16) command . 835.28 WRITE (32) command . 835.29 WRITE AND VERIFY (10) command 855.30 WRITE AND VERIFY (12) command 855.31 WRITE AND VERIFY (16) command 865.32 WRITE AND VERIFY (32) command 865.33 WRITE LONG (10) command 885.34 WRITE LONG

    38、(16) command 885.35 WRITE SAME (10) command 895.36 WRITE SAME (16) command 905.37 WRITE SAME (32) command 915.38 XDREAD (10) command 935.39 XDREAD (32) command 945.40 XDWRITE (10) command 945.41 XDWRITE (32) command 955.42 XDWRITEREAD (10) command 965.43 XDWRITEREAD (32) command 975.44 XPWRITE (10)

    39、command 985.45 XPWRITE (32) command 996 Parameters for direct-access block devices 1016.1 Diagnostic parameters. 1016.1.1 Diagnostic parameters overview 1016.1.2 Translate Address Output diagnostic page 1016.1.3 Translate Address Input diagnostic page 1026.2 Log parameters 1046.2.1 Log parameters ov

    40、erview 1046.2.2 Format Status log page . 1046.2.3 Non-volatile Cache log page 1066.3 Mode parameters. 1076.3.1 Mode parameters overview . 1076.3.2 Mode parameter block descriptors 1096.3.2.1 Mode parameter block descriptors overview . 1096.3.2.2 Short LBA mode parameter block descriptor. 1096.3.2.3

    41、Long LBA mode parameter block descriptor . 111iv6.3.3 Caching mode page. 112Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHSPage6.3.4 Read-Write Error Recovery mode page. 1156.3.5 Ver

    42、ify Error Recovery mode page 1206.3.6 XOR Control mode page 1216.4 Vital product data (VPD) parameters . 1216.4.1 VPD parameters overview . 1216.4.2 Block Limits VPD page. 122Tables1 Standards bodies 32 ISO and American numbering convention examples 93 SBC-2 commands that are allowed in the presence

    43、 of various reservations 174 Example error conditions 185 Sense data field usage for direct-access block devices 186 Block commands sense data descriptor format 197 User data and protection information format . 278 CRC polynomials 289 CRC test cases . 2910 Commands for direct-access block devices 31

    44、11 FORMAT UNIT command . 3512 FORMAT UNIT command address descriptor usage . 3713 FORMAT UNIT parameter list . 3814 Short parameter list header . 3815 Long parameter list header . 3916 Initialization pattern descriptor 4017 Initialization pattern modifier (IP MODIFIER) field . 4118 INITIALIZATION PA

    45、TTERN TYPE field . 4219 Address descriptor formats . 4220 Short block format address descriptor (000b) . 4321 Long block format address descriptor (011b) 4322 Bytes from index format address descriptor (100b) 4323 Physical sector format address descriptor (101b) . 4424 PRE-FETCH (10) command . 4425

    46、PRE-FETCH (16) command . 4626 READ (6) command 4627 Protection information checking for READ (6) 4728 READ (10) command 48v-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Pa

    47、ge29 RDPROTECT field 4830 Force unit access for read operations 5131 READ (12) command 5232 READ (16) command 5233 READ (32) command 5334 READ CAPACITY (10) command . 5435 READ CAPACITY (10) parameter data 5436 READ CAPACITY (16) command . 5537 READ CAPACITY (16) parameter data 5638 READ DEFECT DATA

    48、 (10) command 5639 READ DEFECT DATA (10) parameter data . 5740 READ DEFECT DATA (12) command 5841 READ DEFECT DATA (12) parameter data . 5942 READ LONG (10) command 5943 READ LONG (16) command 6044 REASSIGN BLOCKS command . 6145 REASSIGN BLOCKS parameter list . 6146 REASSIGN BLOCKS short parameter l

    49、ist header 6247 REASSIGN BLOCKS long parameter list header . 6248 START STOP UNIT command . 6349 POWER CONDITION field 6350 SYNCHRONIZE CACHE (10) command 6451 SYNC_NV bit . 6552 SYNCHRONIZE CACHE (16) command 6553 VERIFY (10) command . 6654 VRPROTECT field with BYTCHK set to zero - Checking protection information read from the medium 6755 VRPROTECT


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