SSC density code's
Paul.Entzel at quantum.com
Mon Feb 28 17:20:53 PST 2000
* From the T10 Reflector (t10 at t10.org), posted by:
* Paul Entzel <Paul.Entzel at quantum.com>
You do all understand that this is exactly the reason the REPORT DENSITY
SUPPORT command was added to SSC. The T10 committee wanted to get out of
the density code assigning business. The REPORT DENSITY SUPPORT command
allows the device server to report the densities supported by the device
along with information pertaining to each code. The original concept was to
allow density codes to be managed within other organizations. At the time,
QIC, DSS, and ECMA all had standardized formats used by multiple vendors.
For those developing formats that were vendor unique, the manufacturer's
name could be used as the assigning organization. The table in the appendix
was included for legacy devices. Have we re-though this approach?
Quantum, DSSG Division
> -----Original Message-----
> From: David Peterson [SMTP:dap at storage.network.com]
> Sent: Monday, February 28, 2000 6:09 PM
> To: Paul_A_Suhler at notes.seagate.com
> Cc: t10 at t10.org
> Subject: Re: SSC density code's
> Proposing to include new density codes for drives like LTO, SDLT, etc.
> Paul_A_Suhler at notes.seagate.com wrote:
> > * From the T10 Reflector (t10 at t10.org), posted by:
> > * Paul_A_Suhler at notes.seagate.com
> > *
> > Dave,
> > Are you proposing to include new density codes for drives like LTO,
> SDLT, etc.
> > or just to use it to document those already in the appendix?
> > Thanks,
> > Paul
> > David Peterson <dap at storage.network.com> on 02/28/2000 15:02:08
> > To: T10 Reflector <t10 at t10.org>
> > cc: (bcc: Paul A Suhler)
> > Subject: SSC density code's
> > Howdy All,
> > A proposal and request:
> > Currently the SSC document contains an appendix that attempts to list
> > all the tape drive density codes. It has come to my attention there is
> > no uniform way to allocate a new density code, other than using the next
> > available value. In other words there is no "master list".
> > I would like to remove this appendix in the next revision of SSC (i.e.
> > SSC-2) and maintain the table in a similar manner as ASC/ASCQ's,
> > OpCodes, etc... Thus treat the table as the "master list" and maintain
> > it under T10.
> > Also, it would really help if all tape drives vendors would review the
> > table and let me know if there are any inconsistencies/issues/errors.
> > Comments?
> > *
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