1、American National StandardDeveloped byfor Information Technology SCSI/ATA Translation(SAT)ANSI INCITS 431-2007ANSIINCITS431-2007Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-C
2、opyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSIINCITS 431-2007American National Standardfor Information Technology SCSI/ATA Translation(SAT)SecretariatInformation Technology
3、 Industry CouncilApproved August 9, 2007 American National Standards Institute, Inc.AbstractThis standard specifies a translation layer between SCSI and ATA protocols. This translation layer is used by storage controllers to emulate objects in a SCSI logical unit using an ATA device, providing capab
4、ilities defined by SCSI standards (e.g., the SCSI Block Commands (SBC-2) and SCSI Primary Commands (SPC-3) standards). For the purposes of this standard, ATA device capabilities are defined by ATA8-AAM, ATA8-ACS, ATA8-APT, and SATA 2.5.Copyright American National Standards Institute Provided by IHS
5、under license with ANSI Not 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, consensus, and other criteria for approval havebeen met by the standards developer.Consen
6、sus 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 majority, but not necessarily unanimity. Consensus requires that allviews and object
7、ions 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 approvedthe standards or not, from manufacturing, marketing, purchasing, or usingprod
8、ucts, 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. Moreover, no person shall have the right or authority to issue aninterpretation of
9、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 standard.CAUTION NOTICE: This American National Standard may be revised orwithdrawn at any
10、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 information on all standards by calling or writing the AmericanNational Standards Ins
11、titute.American National StandardPublished byAmerican National Standards Institute, Inc.25 West 43rd Street, New York, NY 10036Copyright 2007 by Information Technology Industry Council (ITI)All rights reserved.No part of this publication may be reproduced in anyform, in an electronic retrieval syste
12、m 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 patents that may be re-quired for the implementation of the standard disclose such patents
13、to the publisher. However, nei-ther the developers nor the publisher have undertaken a patent search in order to identify which, ifany, patents may apply to this standard. As of the date of publication of this standard, followingcalls for the identification of patents that may be required for the im
14、plementation of the standard,notice of one or more such claims has been received. By publication of this standard, no positionis taken with respect to the validity of this claim or of any rights in connection therewith. The knownpatent holder(s) has (have), however, filed a statement of willingness
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16、 representation ismade or implied that this is the only license that may be required to avoid infringement in the use ofthis standard.Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS
17、-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ContentsPageForeword xIntroducttion xiv1 Scope 12 References 42.1 Normative references 42.2 Approved references . 42.3 Refer
18、ences under development 42.4 Other references . 43 Definitions, symbols, abbreviations, and conventions 53.1 Definitions 53.2 Symbols and abbreviations . 103.3 Keywords 113.4 SAT specific terminology 123.5 Conventions 123.5.1 Overview . 123.5.2 Numeric conventions 123.5.3 Bit and byte ordering . 133
19、.5.4 Notation for byte encoded character strings . 143.5.5 Use of and/or 153.5.6 Notation for command descriptions 153.5.6.1 Description 153.5.7 Use of field names defined in ATA standards and specifications . 154 General . 175 SCSI architectural elements . 185.1 Overview . 185.2 Unit attention cond
20、ition . 195.3 Handling errors in ATA commands . 205.4 ATA nexus loss . 205.5 ATA hardware and software reset processing 206 Task management model . 226.1 Overview . 226.2 Queued commands . 236.2.1 Comparison of SCSI and ATA queuing 236.2.2 Mapping of SCSI queued commands to ATA queued commands 246.2
21、.3 Commands the SATL queues internally . 246.2.4 Command queuing with multiple I_T nexuses 24i6.2.5 Collateral abort with queued commands . 256.3 Task management functions . 25Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or net
22、working permitted without license from IHS-,-,-Page6.3.1 Task management functions overview . 256.3.2 Aborting ATA queued commands . 256.3.3 Aborting ATA non-queued commands 266.3.4 ABORT TASK . 266.3.5 ABORT TASK SET . 266.3.6 CLEAR ACA . 276.3.7 CLEAR TASK SET . 276.3.8 LOGICAL UNIT RESET 286.3.9
23、QUERY TASK . 286.3.10 Obsolete reset task management functions . 286.4 Control Byte 286.4.1 CONTROL byte overview . 286.5 I_T nexus loss . 297 Summary of SCSI / ATA command mappings 307.1 Translated and emulated commands . 308 SCSI Primary Commands (SPC) mapping . 328.1 INQUIRY command 328.1.1 INQUI
24、RY command overview . 328.1.2 Standard INQUIRY data . 338.2 LOG SENSE command 358.2.1 LOG SENSE command overview . 358.2.2 PC (page control) field . 368.2.3 PAGE CODE field 368.3 MODE SELECT (6) command 378.3.1 MODE SELECT (6) command overview . 378.3.2 MODE SELECT (6) CDB fields . 378.4 MODE SELECT
25、 (10) command 378.5 MODE SENSE (6) command 378.5.1 MODE SENSE (6) command overview 378.5.2 MODE SENSE (6) CDB fields 388.6 MODE SENSE (10) command 388.7 READ BUFFER command 398.7.1 READ BUFFER command overview 398.7.2 MODE field 398.7.2.1 MODE field overview 398.7.2.2 Data mode 398.7.2.3 Descriptor
26、mode . 408.8 REQUEST SENSE command 408.8.1 REQUEST SENSE command overview . 408.8.2 FORMAT UNIT in progress 418.8.3 SMART threshold exceeded condition . 418.8.4 Stopped power condition 418.8.5 Unit attention condition established 418.9 SEND DIAGNOSTIC command 42ii8.9.1 SEND DIAGNOSTIC command overvi
27、ew 42Copyright American National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page8.9.2 SELF-TEST CODE field 438.9.3 SELFTEST bit 458.10 TEST UNIT READY command . 468.10.1 TEST UNIT READY command overvi
28、ew 468.10.2 TEST UNIT READY command translation 468.11 WRITE BUFFER command 478.11.1 WRITE BUFFER command overview . 478.11.2 MODE field 478.11.2.1 MODE field overview . 478.11.2.2 Write data mode 488.11.2.3 Download microcode mode . 489 SCSI Block Commands (SBC) mapping . 499.1 Translating LBA and
29、transfer length and ATA command use constraints . 499.1.1 Overview . 499.1.2 Direct block mapping model 499.1.3 Indirect block mapping model . 499.1.4 Selection of ATA block commands . 499.2 FORMAT UNIT command . 519.2.1 FORMAT UNIT command overview 519.2.2 FORMAT UNIT parameter list . 529.2.3 SATL
30、defect list header field combinations . 529.2.4 FOV bit . 529.2.5 DCRT bit . 529.2.6 IP bit . 539.3 READ commands overview 539.3.1 READ commands operation code translation . 539.3.2 READ commands with FUA 539.4 READ (6) command 549.5 READ (10) command 549.6 READ (12) command 569.7 READ (16) command
31、579.8 READ CAPACITY (10) command . 589.8.1 READ CAPACITY (10) command overview 589.8.2 READ CAPACITY (10) parameter data 589.9 READ CAPACITY (16) command . 599.9.1 READ CAPACITY (16) command overview 599.9.2 READ CAPACITY (16) parameter data 599.10 REASSIGN BLOCKS command . 609.10.1 REASSIGN BLOCKS
32、command overview 609.10.2 REASSIGN BLOCKS operation code . 609.11 START STOP UNIT command . 629.11.1 START STOP UNIT command overview 629.11.2 Processing ending status if an error occurs 62iii9.11.3 START STOP UNIT START bit LOEJ bit combinations 63Copyright American National Standards Institute Pro
33、vided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page9.12 SYNCHRONIZE CACHE (10) command 649.13 SYNCHRONIZE CACHE (16) command 649.14 VERIFY (10) command . 659.15 VERIFY (12) command . 669.16 VERIFY (16) command . 679.17 WRITE co
34、mmands overview 689.17.1 WRITE commands operation code translation . 689.17.2 WRITE commands with FUA 689.18 WRITE (6) command 699.19 WRITE (10) command 709.20 WRITE (12) command 719.21 WRITE (16) command 729.22 WRITE AND VERIFY commands overview 729.23 WRITE AND VERIFY (10) command . 739.24 WRITE A
35、ND VERIFY (12) command . 749.25 WRITE AND VERIFY (16) command . 759.26 WRITE SAME (10) command . 769.26.1 WRITE SAME (10) command overview 769.26.2 LBDATA bit and PBDATA bit 779.27 WRITE SAME (16) command . 7810 Parameters for SAT implementations . 7910.1 Mode parameters 7910.1.1 General information
36、 7910.1.2 Commonly used SCSI mode pages overview 7910.1.3 Mode parameter headers . 8010.1.4 Mode parameter block descriptor fields 8110.1.5 Control mode page . 8110.1.5.1 General translation . 8110.1.5.2 Extended self-test completion time . 8310.1.6 Read-Write Error Recovery mode page . 8310.1.7 Cac
37、hing mode page 8410.1.8 Informational Exceptions Control mode page . 8610.1.8.1 Informational Exceptions Control mode page overview 8610.1.8.2 Method of reporting informational exceptions (MRIE) 8610.2 Log pages . 8710.2.1 Log pages overview 8710.2.2 Supported Log Pages log page 8710.2.3 Self-Test R
38、esults log page 8710.2.3.1 Self-Test Results log page overview 8710.2.3.2 A method of determining ATA command selection for field translations . 9110.2.3.3 Sense key and additional sense code 92iv10.2.4 Informational Exceptions log page 92Copyright American National Standards Institute Provided by I
39、HS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page10.2.4.1 Informational Exceptions log page overview . 9210.2.4.2 Additional sense code and additional sense code qualifier translations 9310.2.4.3 Most recent temperature reading transla
40、tion 9410.3 Vital product data parameters . 9410.3.1 Vital product data parameters overview 9410.3.2 Supported VPD pages VPD page . 9410.3.3 Unit Serial Number VPD page 9410.3.4 Device Identification VPD page . 9610.3.4.1 Device Identification VPD page overview . 9610.3.4.2 Logical unit name 9610.3.
41、4.2.1 Logical unit name overview . 9610.3.4.2.2 Logical unit name derived from the world wide name . 9710.3.4.2.3 Logical unit name derived from the model number and serial number . 9810.3.4.3 Examples of additional identification descriptors 9910.3.4.3.1 Identification descriptors included by a SAT
42、L in an ATA host . 9910.3.4.3.2 Identification descriptors included by a SATL in a SAS initiator device 9910.3.4.3.3 Identification descriptors included by a SATL in a SCSI to ATA protocol bridge 10010.3.5 Mode Page Policy VPD page 10111 Error and sense reporting . 10211.1 Error translation ATA devi
43、ce error to SCSI error map 10212 SAT-specific SCSI extensions 10312.1 SAT-specific SCSI extensions overview . 10312.2 ATA PASS-THROUGH commands . 10312.2.1 ATA PASS-THROUGH commands overview . 10312.2.2 ATA PASS-THROUGH (12) command . 10412.2.3 ATA PASS-THROUGH (16) command . 10712.2.4 Mapping of AT
44、A PASS-THROUGH CDB field translations . 10812.2.5 ATA PASS-THROUGH status return 10912.2.6 ATA Return descriptor . 11012.3 SAT-specific mode pages . 11112.3.1 SAT-specific mode pages overview 11112.3.2 PATA Control mode page . 11112.4 SAT-specific VPD pages . 11612.4.1 SAT-specific VPD pages overvie
45、w 11612.4.2 ATA Information VPD page . 11612.4.2.1 ATA Information VPD page overview 11612.4.2.2 ATA device signature 11812.4.2.3 ATA IDENTIFY DEVICE data or ATA IDENTIFY PACKET DEVICE data 119Annex A INQUIRY command translation for ATAPI devices 120vA.1 INQUIRY command overview . 120Copyright Ameri
46、can National Standards Institute Provided by IHS under license with ANSI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-PageA.2 Supported VPD Pages VPD page 120A.3 ATA Information VPD page . 120Tables1 ISO and American numbering conventions examples 132 Example of
47、 ordering of bits and bytes within a multi-byte element . 143 Example of ordering of bits and bytes within a multiple element 144 Format for translated command field descriptions 155 Comparison of SCSI and ATA queuing methods . 236 SATL processing of ATA commands aborted by ATA collateral abort 257
48、Control byte fields . 288 Summary of SCSI / ATA Command Mapping . 309 INQUIRY CDB field translations . 3210 Standard INQUIRY data fields 3311 LOG SENSE CDB field translations . 3512 PC field 3613 PAGE CODE field . 3614 MODE SELECT (6) CDB field translations . 3715 MODE SENSE (6) CDB field translatio
49、ns . 3816 READ BUFFER CDB field translations . 3917 MODE field 3918 Special Request Sense behavior reference . 4019 REQUEST SENSE CDB field translations 4120 SEND DIAGNOSTIC CDB field translations . 4221 SELF-TEST CODE field translation 4322 SELFTEST bit 4523 TEST UNIT READY CDB field translations 4624
