SAS: transport layer retries
George Penokie
gop at us.ibm.com
Thu Jul 27 06:33:16 PDT 2006
Formatted message: <A HREF="r0607271_f.htm">HTML-formatted message</A>
Mignon,
The standard states:
....the vendor-specific number of retries, if any, for the write DATA
frame has not been reached.
and
If transport layer retries are enabled and the vendor-specific number of
retries, if any, for the read DATA frame has not been reached,
That would suggest that even though retries are enabled you don't have to
do the retries. But if the customer of your product enables data retries
and you don't do it them waving the "if any" clause as your excuse for not
have to do the retry they are expecting will not get you very far.
Bye for now,
George Penokie
Dept 9A8 030-3 A410
E-Mail: gop at us.ibm.com
Internal: 553-5208
External: 507-253-5208
"Mignon Fernandez" <Mignon.M.Fernandez at bitmicro.com>
Sent by: owner-t10 at t10.org
07/27/2006 02:10 AM
To
<t10 at t10.org>
cc
Subject
SAS: transport layer retries
Hello again,
If Transport Layer retries are enabled, and a link layer error (e.g. a NAK
is received) occurs during a Data transfer, does a device, e.g. in SSP
Target mode, have an option not to retry the data? Can the Target/device
server terminate the command (send the status) without retrying? Will this
action violate the specs?
Thanks in advance,
Mignon Fernandez
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