SAS: transport layer: ACK lost

Mignon Fernandez Mignon.M.Fernandez at bitmicro.com
Tue Jul 11 23:16:17 PDT 2006


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Hello Mr. Penokie, 
Thank you for your response.  Yes, I was assuming frame level retries
are enabled and was referring to handling of retried data in general
(initiator's or target's point of view). 
Regards,
Mignon 
________________________________
From: George Penokie [mailto:gop at us.ibm.com] 
Sent: Thursday, July 06, 2006 2:35 PM
To: Mignon Fernandez
Cc: t10 at t10.org
Subject: Re: SAS: transport layer: ACK lost
Mignon, 
>From your question it is not clear if you are asking from a targets
point of view or an initiators point of view. It's also not clear if you
are asking about what happens if frame level retries are enabled or
disabled. 
So given that lack of knowledge the answer to you question is yes you
have to overwrite data that is retried even if it has been ACKed. 
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 
06/21/2006 08:00 AM 
To
<t10 at t10.org> 
cc
Subject
SAS: transport layer: ACK lost
Hello, 
If retries are enabled, and an ACK gets lost, then the transmitter
retries, is it required for the receiver to overwrite the data that is
retried even if it has ACK-ed all data in the previous connection? 
Thanks in advance, 
Mignon Fernandez 



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