18-month-old discrepancy in SPC-4

Paul Suhler Paul.Suhler at quantum.com
Thu Sep 23 13:21:26 PDT 2010


Formatted message: <a href="http://www.t10.org/cgi-bin/ac.pl?t=r&f=r1009233_f.htm">HTML-formatted message</a>

Quantum requests that we stick with the speciffication in SPC-4.
Paul
________________________________________________________________________
_____________________________ 
Paul A. Suhler | Firmware Engineer | Quantum Corporation | Office:
949.856.7748 | paul.suhler at quantum.com 
Preserving the World's Most Important Data. Yours.(tm) 
________________________________
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Ballard,
Curtis C (StorageWorks)
Sent: Thursday, September 23, 2010 11:36 AM
To: Kevin D Butt; Gerry Houlder
Cc: owner-t10 at t10.org; T10 Reflector
Subject: RE: 18-month-old discrepancy in SPC-4
HP also requests that the parameters as specified in SPC-4 be retained.
Curtis Ballard
Hewlett Packard
StorageWorks Division
Fort Collins, CO
(970) 898-3013
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Kevin D
Butt
Sent: Thursday, September 23, 2010 10:50 AM
To: Gerry Houlder
Cc: owner-t10 at t10.org; T10 Reflector
Subject: Re: 18-month-old discrepancy in SPC-4
My company implemented the Power Transitions Log Page as specified in
SPC-4. 
Kevin D. Butt
SCSI & Fibre Channel Architect, Tape Firmware
MS 6TYA, 9000 S. Rita Rd., Tucson, AZ 85744
Tel: 520-799-5280
Fax: 520-799-2723 (T/L:321)
Email address: kdbutt at us.ibm.com
http://www-03.ibm.com/servers/storage/
<http://www-03.ibm.com/servers/storage/&gt;  
From:	     Gerry Houlder <gerry.houlder at seagate.com> 
To:	   T10 Reflector <t10 at t10.org> 
Date:	     09/23/2010 08:40 AM 
Subject:	Re: 18-month-old discrepancy in SPC-4 
Sent by:	owner-t10 at t10.org 
________________________________
I believe the parameter codes must be restored to the values that were
in the accepted proposal. My company implemented those values based on
its acceptance by the T10 group. I apologize for not noticing the
editorial error earlier, but if you want the parameters changed to 1
through 4 then a new proposal should be required.
On Wed, Sep 22, 2010 at 6:53 PM, Kevin D Butt <kdbutt at us.ibm.com
 > wrote: 
I don't believe those log parameters existed before so the first time
they exist is in the SPC-4 version that first introduced them.	Given
this, I vote to leave them the way they were posted - especially since
we have since had two different version descriptors assigned with these
values. 
Kevin D. Butt
SCSI & Fibre Channel Architect, Tape Firmware
MS 6TYA, 9000 S. Rita Rd., Tucson, AZ 85744
Tel: 520-799-5280
Fax: 520-799-2723 (T/L:321)
Email address: kdbutt at us.ibm.com  
http://www-03.ibm.com/servers/storage/
<http://www-03.ibm.com/servers/storage/&gt;  
From:	     Ralph Weber <roweber at IEEE.org> 
To:	   "'t10 at t10.org <mailto:t10 at t10.org> '" <t10 at t10.org
<mailto:t10 at t10.org> > 
Date:	     09/22/2010 04:44 PM 
Subject:	18-month-old discrepancy in SPC-4 
Sent by:	owner-t10 at t10.org <mailto:owner-t10 at t10.org>  
________________________________
* From the T10 Reflector (t10 at t10.org <mailto:t10 at t10.org> ), posted by:
* Ralph Weber <roweber at ieee.org  >
*
 In February 2009 (last year), Gerry Houlder's 09-054r1
was approved (8:0:10) for incorporation in SPC-4. When
the document was incorporated, the proposed Log Parameter
Code values of 0--3 were incremented by one (i.e., 1--4
were incorporated instead of the proposed values) in
SPC-4 r18.
http://www.t10.org/cgi-bin/ac.pl?t=d&f=09-054r1.pdf
<http://www.t10.org/cgi-bin/ac.pl?t=d&f=09-054r1.pdf&gt; 
http://www.t10.org/cgi-bin/ac.pl?t=f&f=spc4r18.pdf
<http://www.t10.org/cgi-bin/ac.pl?t=f&f=spc4r18.pdf&gt; 
Since I cannot find an explanation or justification for
this change, it must be considered an editorial mistake.
The question now is a little complex. Do we leave the
codes the way they were posted ... or ... do I fix them
as part of incorporating 09-360r9?
A related point is that Version Descriptors have been
assigned to SPC-4 r18 and SPC-4 r23. How this affects
the choice is in the eye of the beholder.
All the best,
.Ralph
*
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