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Printed 12:58 PM Thursday 26 June 2014
Working Project
Draft T10/BSR INCITS 513
Revision 37a
26 June 2014
Information technology -
SCSI Primary Commands - 4 (SPC-4)
This is an internal working document of T10, a Technical Committee of Accredited Standards Committee
INCITS (InterNational Committee for Information Technology Standards). As such this is not a completed
standard and has not been approved. The contents may be modified by the T10 Technical Committee. The
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ANSI INCITS 513-20xx
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ANSI (r)
INCITS 513-20xx
American National Standards
for Information Systems -
SCSI Primary Commands - 4 (SPC-4)
Secretariat
InterNational Committee for Information Technology Standards
Approved mm dd yy
American National Standards Institute, Inc.
Abstract
This standard defines the device model for all SCSI devices. This standard defines the SCSI commands that
are basic to every device model and the SCSI commands that may apply to any device model.
Published by
American National Standards Institute
25 West 43rd Street 4th floor
New York, New York 10036-7422
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise,
without prior written permission of ITI, 1101 K Street NW, Suite 610, Washington, DC 20005-7031.
All rights reserved.
Printed in the United States of America
American
National
Standard
Approval of an American National Standard requires verification by ANSI that the
requirements for due process, consensus, and other criteria for approval have been
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26 June 2014 T10/BSR INCITS 513 Revision 37a
Working Draft SCSI Primary Commands - 4 (SPC-4) v
Contents
Page
Foreword ...........................................................................................................................................................xl
Introduction .....................................................................................................................................................xlv
SCSI standards family.................................................................................................................................... xlvi
1 Scope ............................................................................................................................................................. 1
2 Normative references..................................................................................................................................... 1
2.1 General ................................................................................................................................................. 1
2.2 Approved references ............................................................................................................................ 2
2.3 References under development............................................................................................................ 4
2.4 CFA references..................................................................................................................................... 5
2.5 IETF references.................................................................................................................................... 5
2.6 NIST references.................................................................................................................................... 6
2.7 USB Implementers Forum references .................................................................................................. 6
3 Definitions, symbols, abbreviations, and conventions.................................................................................... 7
3.1 Definitions ............................................................................................................................................. 7
3.2 Abbreviations and symbols................................................................................................................. 25
3.2.1 Abbreviations ................................................................................................................................... 25
3.2.2 Symbols ........................................................................................................................................... 27
3.2.3 Mathematical operators ................................................................................................................... 28
3.3 Keywords ............................................................................................................................................ 28
3.4 Conventions........................................................................................................................................ 29
3.5 Numeric and character conventions ................................................................................................... 30
3.5.1 Numeric conventions ....................................................................................................................... 30
3.5.2 Units of measure.............................................................................................................................. 31
3.5.3 Byte encoded character strings conventions ................................................................................... 32
3.6 Bit and byte ordering........................................................................................................................... 32
3.7 Notation conventions .......................................................................................................................... 34
3.7.1 Notation for procedure calls............................................................................................................. 34
3.7.2 Notation for state diagrams.............................................................................................................. 35
3.7.3 Notation for flowcharts ..................................................................................................................... 36
3.7.4 Notation for UML figures.................................................................................................................. 37
3.7.4.1 Introduction ................................................................................................................................... 37
3.7.4.2 Class notation ............................................................................................................................... 38
3.7.4.3 Class association relationships notation....................................................................................... 38
3.7.4.4 Class aggregation relationships notation...................................................................................... 39
3.7.4.5 Class generalization relationships notation .................................................................................. 41
3.7.4.6 Class dependency relationships notation ..................................................................................... 42
3.7.4.7 Object notation.............................................................................................................................. 42
3.7.5 Notation for EXTENDED COPY command segment descriptors .................................................... 43
4 General concepts ......................................................................................................................................... 44
4.1 Introduction ......................................................................................................................................... 44
4.2 Command Descriptor Block ................................................................................................................ 44
4.2.1 CDB usage and structure ................................................................................................................ 44
4.2.2 Fixed length CDB formats................................................................................................................ 45
4.2.2.1 Formats for 6-byte CDBs .............................................................................................................. 45
4.2.2.1.1 Generic 6-byte CDB format ....................................................................................................... 45
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