[T13] SFF Object Drive Work Group

Paul Suhler Paul.Suhler at hgst.com
Fri Jan 16 10:28:16 PST 2015


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Announcing the first meeting of the SFF Object Drive Work Group.  This
message is being sent – in addition to the SFF reflector – to the
following groups in an attempt to advertise this work to anyone who has an
interest.  Please forward it to anyone who has an interest.

   *   SNIA Object Drive TWG

   *   T10

   *   T13

Background:

In January 2014, Seagate contributed its Kinetic Ethernet Drive interface
specification and T-Card development adapter to the Open Compute Project.

In October 2014, SNIA created the Object Drive TWG to standardize physical
and logical interfaces to network-attached storage devices e.g. HDDs and
SSDs.

The signal assignment for pins P1, P2, and P3 of an SFF-8639-style connector
that was initially adopted by the Object Drive TWG varied from that of the
Kinetic drives, which uses two of those pins for an I2C interface.

Dal Allan has made an initial update to SFF-9639:

The specification has been revised to include the OCP and SNIA pinouts, and
Rev 0.7 can be downloaded from ftp://ftp.seagate.com/sff/SFF-9639.PDF

Note:  The “SNIA” column shows the P1 – P3 assignments that the Object
Drive TWG approved on 8 December 2014, and which conflict with Kinetic/OCP. 
The main purpose of this SFF workgroup is to change those pins to a
mutually-acceptable assignment.

Objective:

Both groups are using the SFF Committee to decide upon a mutually-acceptable
pinout definition which will allow the different types of drives to be
plugged into a compliant backplane such that:

  a) No damage occurs to the drive or backplane.

  b) The backplane/enclosure controller can detect the type of drive.

  c) The drive may be configured by an optional I2C interface.

Agenda

  1.  Welcome

  2.  Anti-trust statement

  3.  Procedures

  4.  Confirmation of workgroup leader

  5.  Summary of discussion at 14 January SFF face-to-face meeting

  6.  Scope of work

  7.  Technical discussion

  8.  Next meeting(s)

  9.  Review of action items

  10. Adjournment

Paul Suhler invites you to an online meeting using WebEx.

Meeting Number: 809 297 075

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