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SCSI Commands Reference Manual
Parallel SCSI Fibre Channel (FC) Serial Attached SCSI (SAS)

Rev. A

SCSI Commands Reference Manual
Parallel SCSI Fibre Channel (FC) Serial Attached SCSI (SAS)

Rev. A

©2006, Seagate Technology LLC All rights reserved Publication number: 100293068, Rev. A February 2006 Seagate and Seagate Technology are registered trademarks of Seagate TechnologyLLC. SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission ofSeagate Technology LLC.

Revision status summary sheet
Revision Date Sheets Affected

Rev. A

02/14/06

All.

SCSI Commands Reference Manual, Rev. A

iii

iv

SCSI Commands Reference Manual, Rev. A

Table of Contents
Table of Contents .............................................................................................................................. v List ofTables .................................................................................................................................... xi 1.0 Definitions, symbols, abbreviations, keywords, and conventions .............................................. 1 1.1 1.2 1.3 1.4 2.1 Definitions.................................................................................................................................... 2 Symbols and abbreviations ........................................................................................................ 12 Keywords ................................................................................................................................... 14 Conventions............................................................................................................................... 15

2.0 General Concepts ........................................................................................................................... 17 Command Descriptor Block (CDB) ............................................................................................ 18 2.1.1 CDB usage and structure............................................................................................... 18 2.1.2 The fixed length CDB formats ......................................................................................... 18 2.1.3 The variable length CDB formats .................................................................................... 22 2.2 Common CDB fields.................................................................................................................. 24 2.2.1 Operation Code .............................................................................................................. 24 2.2.2 Service action ................................................................................................................. 24 2.2.3 Logical block address..................................................................................................... 24 2.2.4 Transfer length ................................................................................................................ 25 2.2.5 Parameter list length ....................................................................................................... 25 2.2.6 Allocation length............................................................................................................. 25 2.2.7 Control ............................................................................................................................ 26 2.2.8 Grouping function ........................................................................................................... 27 2.3 Parameter rounding...
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