SSC-4: Sequential-access device log page

Ballard, Curtis C (StorageWorks) curtis.ballard at
Mon Mar 1 08:43:35 PST 2010

Formatted message: <a href="">HTML-formatted message</a>

No objections from HP.	I believe that would be a useful clarification.
Curtis Ballard
Hewlett Packard
StorageWorks Platforms Tape
Fort Collins, CO
(970) 898-3013
From: owner-t10 at [mailto:owner-t10 at] On Behalf Of Kevin D Butt
Sent: Monday, March 01, 2010 8:52 AM
To: t10 at
Subject: SSC-4: Sequential-access device log page
In the sequential access device log page (0Ch) there are several parameters
defined where there is the use of the term "medium".  This has caused some
confusion about whether the intent is to report values based on what has
actually been committed to the medium or what has made it into the object
buffer (e.g., during writes are the blocks that have successfully been
received into the buffer part of the parameter or only those that have been
flushed to medium).
The intent when I brought the proposal to add the parameters from 0004h on is
that it be the logical state of the medium, not the committed state of the
medium.  It is intended to be used as a gas gauge for the operations being
Are there any objections to refining the wording to clarify this?
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

More information about the T10 mailing list