95-222r2 -- Power Condition mode page code

ROWEBER at ACM.ORG ROWEBER at ACM.ORG
Sun Jul 16 07:35:56 PDT 1995


                                                        X3T10/95-222R2

To:       SCSI Reflector

From:     Ralph O. Weber      ROWeber at ACM.org
          ENDL Associates

Date:     July 16, 1995

Subject:  Power Condition mode page code


The X3T10 Working Group has determined that the Power Condition mode
page (defined in approved document X3T9.2/91-014r6) should be applied
to all device types.  Power management has equal importance to all
device types, not just disks, as originally envisioned.

However, the Power Condition mode page code (0Dh) is the same as the
code used by the CD-ROM mode page.  Successful use of the Power
Condition mode page by all device types requires assignment of a
currently unused mode page code.  At the request of the Working Group,
I have assigned mode page code 1Ah to the Power Condition mode page
(as used by all device types).

The X3T10 working group recommends usage of the 1Ah mode page code for
all device type implementations of the Power Condition mode page,
including direct access devices.  The 0Dh mode page code will remain
reserved for the Power Condition mode page in disk devices.  However,
mode page code 1Ah is recommended instead.  In all other respects,
the Power Condition mode page shall be implemented as described in
approved document X3T9.2/91-014r6.

The SCSI-3 Primary Commands technical editor should be instructed
to include those sections of X3T9.2/91-014r6 that describe the Power
Condition mode page as a new sub-clause in clause 8.3 of the SPC. 
Wherever the 0Dh mode page code is used, the editor should substitute
1Ah.




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