Obsolete mixed command and data, mixed data and response
Bob.Snively at Ebay.Sun.COM
Fri Nov 13 14:16:08 PST 1998
* From the T10 (formerly SCSI) Reflector (t10 at symbios.com), posted by:
* Bob Snively <Bob.Snively at Ebay.Sun.COM>
At present, there are no implementations that allow combining the command and
data in a single IU nor any implementations that allow combining the data and
response in a single IU. All implementations use separate IUs (and therefore
separate sequences) for all individual phases. Of course, the phases may be
transferred during the same loop tenancy for improved FC-AL efficiency. I
propose that the FCP-2 be simplified by removing and making obsolete the use of
mixed command/data and mixed data/response. That would eliminate some text in
section 7.1, remove the necessity to clarify sections 7.3 and 7.4, eliminate the
PRLI parameters of command/data mixed allowed and data/response mixed allowed,
and remove IUs T8, T9, T10, T11, I6, and I7.
This has not yet been done in the first revision of FCP-2.
Consider this to be the formal proposal.
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