Call for Participation: Library/Drive Interface Working Group, 6 November2001

Paul.A.Suhler at seagate.com Paul.A.Suhler at seagate.com
Mon Oct 1 13:32:06 PDT 2001


* From the T10 Reflector (t10 at t10.org), posted by:
* Paul.A.Suhler at seagate.com
*
Call for Participation
Media Changer / Data Transfer Element Interface Working Group
9:00 AM, Tuesday, November 6, 2001
Monterey, California

Tape (and other removable media) drives installed in media changers
typically are controlled by the media changer via a private RS-422 serial
link.  To date there is no widely-accepted protocol to be run over these
links.  This has meant that whenever a drive is integrated into a new
library, new firmware must be written and debugged by the drive vendor or
the library vendor or (usually) both.  The results are delays in product
introduction and sometimes customer problems.

We now have an opportunity to develop an open standard for drive-library
communications.  Adaptec, host of the November 2001 T10 Plenary Week in
Monterey, California, has made available a room all day on Tuesday, 6
November, for an initial meeting.  All interested parties - and especially
manufacturers of media changers and removable media drives - are welcome.

The standard developed will NOT be an American National Standard; the
meeting is being held during T10 Plenary Week purely for the convenience of
the participants.  Development of the standard must follow the
commonly-accepted rules for due process, consensus, and notification of
patent applicability.  It is not anticipated that this effort will extend
to licensing, development of test suites, or any form of compliance
certification.  It is not anticipated that this effort will be anything
other than ad hoc - no formal membership, dues, etc.

To further clarify the scope of this interface, here are two scenarios of
its use:

1.  Independent media changer operation:

   Host issues MOVE MEDIUM to library to load drive
   Library robot inserts medium in drive
   Library polls drive status over RS-422 until drive is ready
   Library returns SCSI status for MOVE MEDIUM command

2.  In a low-cost library without a Parallel SCSI or Fibre Channel
interface, drive with SCSI / FC interface serves as bridge to library:

   Host issues MOVE MEDIUM to LUN 1 at drive's target ID
   Drive sends MOVE MEDIUM to library via RS-422
   Library robot inserts medium in drive
   Library polls drive status over RS-422 until drive is ready
   Library returns SCSI status for MOVE MEDIUM command via RS-422 to drive
   Drive sends SCSI status to host via SCSI / FC


Proposed Agenda:

   Introductions
   Establishment of ground rules
   Support (e-mail reflector, draft document distribution, etc.)
   Selection of facilitator, editor, and secretary
   Presentations on requirements
   Presentations on proposed solutions
   Future meeting plans

Please come prepared to address as many of these items as possible.


Thank you for your interest,

Paul Suhler

Seagate Removable Storage Solutions
1650 Sunflower Avenue
Costa Mesa, California, 92626, USA
(714) 641-2485 (voice)
(714) 966-9328 (fax)


*
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at t10.org




More information about the T10 mailing list