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SCSI Architecture Model - 5 (SAM-5)
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SCSI Architecture Model - 5 (SAM-5)SCSI Architecture Model - 5 (SAM-5)SCSI Architecture Model - 5 (SAM-5)SCSI Architecture Model - 5 (SAM-5)SCSI Architecture Model - 5 (SAM-5)SCSI Architecture Model - 5 (SAM-5)
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Printed 2:06 PM Tuesday 11 May 2010
Working Draft Project
American National T10/2104-D
Standard
Revision 05
19 May 2010
Information technology -
SCSI Architecture Model - 5 (SAM-5)
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 contents are
actively being modified by T10. This document is made available for review and comment only.
Permission is granted to members of INCITS, its technical committees, and their associated task groups to
reproduce this document for the purposes of INCITS standardization activities without further permission,
provided this notice is included. All other rights are reserved. Any duplication of this document for commercial or
for-profit use is strictly prohibited.
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LSI Corporation
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Reference number
ISO/IEC 14776-415:201x
ANSI INCITS ***-201x
T10/2104-D Revision 05 19 May 2010
ii Working Draft SCSI Architecture Model - 5 (SAM-5)
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19 May 2010 T10/2104-D Revision 05
Working Draft SCSI Architecture Model - 5 (SAM-5) iii
American National Standard
for Information Technology
SCSI Architecture Model - 5 (SAM-5)
Secretariat
Information Technology Industry Council
Approved mm.dd.yy
American National Standards Institute, Inc.
ABSTRACT
This standard specifies the SCSI Architecture Model. The purpose of the architecture is to provide a common
basis for the coordination of SCSI standards and to specify those aspects of SCSI I/O system behavior that are
independent of a particular technology and common to all implementations.
T10/2104-D Revision 05 19 May 2010
iv Working Draft SCSI Architecture Model - 5 (SAM-5)
Published by
American National Standards Institute
11 W. 42nd Street, New York, New York 10036
Copyright © 2010 by Information Technology Industry Council (ITI).
All rights reserved.
No part of this publication may be reproduced in any
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without prior written permission of ITI, 1101 K Street NW, Suite 610,
Washington, DC 20005.
Printed in the United States of America
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National
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19 May 2010 T10/2104-D Revision 05
Working Draft SCSI Architecture Model - 5 (SAM-5) v
Revision Information
R.1 Revision SAM-5r00 (24 September 2008)
First release of SAM-5. Same content as SAM-4 revision 14.
R.2 Revision SAM-5r01 (28 January 2009)
The following T10 approved proposals were incorporated in SAM-5 in this revision:
a) 08-327r2 - Restrict SPC-4 and SAM-5 codes to FC-SB-4 use [Butt];
b) 08-450r1 - Add Restricted keyword to the Style Guide [Weber];
c) 09-003r0 - Correct redundant text in command state transition figure [Knight]; and
d) 09-017r1 - QUERY TASK TMF Progress Indicator [Knight].
R.3 Revision SAM-5r02 (22 July 2009)
The following T10 approved proposals were incorporated in SAM-5 in this revision:
a) 09-159r1 - SAM5 - CLEAR_ACA status when no ACA condition exists [Knight];
b) An error was corrected that was induced in SAM-4 that was pointed out in the following e-mail from Rob
Elliott on 03/05/2009:
“SAM-4 no longer has 06-411r2 (REPORTED LUNS DATA HAS CHANGED unit attention clearing)
incorporated correctly. In 5.14, items c) and d) are supposed to be paragraphs inside b), as they only
apply to the REPORT LUNS command.
c) if the UA_INTLCK_CTRL field in the Control mode page is set to 00b (see SPC-4), the SCSI target
device shall clear any pending unit attention condition with an additional sense code of REPORTED
LUNS DATA HAS CHANGED established for the SCSI initiator port associated with that I_T nexus in
each logical unit accessible by the I_T nexus on which the REPORT LUNS command was received.
Other pending unit attention conditions shall not be cleared;
d) if the UA_INTLCK_CTRL field in the Control mode page contains 10b or 11b, the SCSI target device
shall not clear any unit attention condition(s);
i) if a device server reports a unit attention condition with a CHECK CONDITION status and the
UA_INTLCK_CTRL field in the Control mode page contains 00b (see SPC-4), then the device server
shall clear the reported unit attention condition for the SCSI initiator port associated with that I_T nexus
on the logical unit. If the unit attention condition has an additional sense code of REPORTED LUNS
DATA HAS CHANGED, the SCSI target device shall clear any pending unit attention conditions with an
additional sense code of REPORTED LUNS DATA HAS CHANGED established for the I_T nexus on
which the command was received in each logical unit accessible by that I_T nexus. If the
UA_INTLCK_CTRL field contains 10b or 11b, the device server shall not clear unit attention conditions
reported with a CHECK CONDITION status.
Everything was correct from sam4r08 through sam4r13c, where this section was in section 5.8.7. It was
broken in sam4r14d when the section was renumbered to 5.14. It looks like every top level paragraph in
that list got changed to an UnorderedList0, including the unnumbered ones. f) and i) are also wrong.”
c) An error in a cross reference between SAM-5 and SPC-4 was pointed out in the following e-mail from
Fred Knight on 03/09/2009.
“SAM5r1 4.5.4.2 - SCSI Device Name attribute - last paragraph -...may be reported in a target device
name designation descriptor in the Device Identification VPD page (see SPC-4).
SPC4r18 - target device name - doesn't exist/.”
This was corrected by changing the reference in subclause 4.5.4.2 SCSI Device Name attribute and
subclause 4.5.25 Well Known Logical Unit class to the following:
"in the Device Identification VPD pages designation descriptor for SCSI target devices (see SPC-4)."
d) An error in the incorporation of 09-017r1 was pointed out by Mark Evens in the following e-mail:
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