[T10] T10/T13 joint weber on DePop: new rev of T13 version

Joe Breher Joe.Breher at hgst.com
Tue Apr 26 10:09:34 PDT 2016

A new version of the T13 formatted OFFline Logical DePop proposal is posted, incorporating comments from last week’s plenary. I would like to use today’s joint webex to ratify the edits, and to address several topics of larger impact.

Some of the areas for discussion:

- what are the interactions with caches?
- can we enumerate the commands and logs that will be affected by interactions with this feature?
- do we need an immediate mode - whereby the command completes, but the operation carries on in the background?
- a query for phys elem / LBA mapping is useful in some use cases. Does this need to be defined here, or is a separate proposal warranted?
- field sizes
- what is the mapping from Rebuild Assist log physical element bits and the PHYSICAL ELEMENT field?
- - do we assume that the Rebuild Assist log supports only physical storage elements (i.e., no subelements, no non-storage elements)?
- where within IDENTIFY DEVICE Data log do support and enable bits go?
- - log only, or in IDENTIFY DEVICE data as well?
- - is enable sticky through resets?

Joe Breher
Storage Architecture Technologist
Standards Setting Organization
San Jose Research Center
Western Digital
(478) 2-Breher
(478) 227-3437

[cid:3888D38D-876F-48C4-94D6-BF5B836DAD27 at gateway.innflux.com]

Begin forwarded message:

From: T13 Committee <t13-admin13-approval at t13.org<mailto:t13-admin13-approval at t13.org>>
Subject: [T13] Thank You! for document submission in the T13 committee
Date: April 26, 2016 at 10:40:02 AM MDT
To: <joe.breher at hgst.com<mailto:joe.breher at hgst.com>>
Cc: <Curtis.Stevens at wdc.com<mailto:Curtis.Stevens at wdc.com>>, <Ralph.Weber at WDC.com<mailto:Ralph.Weber at WDC.com>>, <james.c.hatfield at seagate.com<mailto:james.c.hatfield at seagate.com>>, <bill.martin at ssi.samsung.com<mailto:bill.martin at ssi.samsung.com>>

Hello User

Your document in the T13 committee has been submitted successfully, below are details of the same:

File Number: f16123r1
Title: Offline Logical DePop
Description: A new feature that 'offlines' a physical element
PDF Document: http://www.t13.org/documents/UploadedDocuments//docs2016/f16123r1-Offline_Logical_DePop.pdf
Word Document: N/A
Other Document: http://www.t13.org/documents/UploadedDocuments//docs2016/f16123r1-Offline_Logical_DePop.fm

~T13 Committee~

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