SBC-2 FORMAT UNIT - possibly obsolete fields
Elliott, Robert (Server Storage)
elliott at hp.com
Tue Jan 20 06:53:48 PST 2004
* From the T10 Reflector (t10 at t10.org), posted by:
* "Elliott, Robert (Server Storage)" <elliott at hp.com>
> -----Original Message-----
> From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf
> Of Pat LaVarre
> Sent: Monday, January 19, 2004 5:11 PM
> To: t10 at t10.org
> Subject: Re: SBC-2 FORMAT UNIT - possibly obsolete fields
> > In SBC-2,
> > ...
> > (reminder: obsolete just means "defined in previous versions of the
> > standard.")
> > INTERLEAVE (in the CDB)
> > ...
> > An interleave of zero
> > specifies
> > that the device server use its default interleave. An
> interleave of one
> > specifies that consecutive logical blocks be placed in contiguous
> > ascending order. All other values are vendor-specific.
> Do we propose obsoleting INTERLEAVE != 0?
Yes. New devices would all employ the interleave == 0 behavior.
> > DISABLE SAVING PARAMETERS (DSP) (in the defect list header) ...
> We propose to obsolete this in some backwards-compatible way
> that still
> avoids requiring non-volatile memory in the drive? What is that way?
> Require DSP = 1?
No, DSP=0 would be assumed. A device running a format would be
expected to leave its saved mode pages alone.
(the question for disk drive vendors is: is this how they work today?)
Rob Elliott, elliott at hp.com
Hewlett-Packard Industry Standard Server Storage Advanced Technology
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