Question about SAS Wide ports & first burst data
Mona
monika.sethi at nsysinc.com
Tue Feb 2 23:03:59 PST 2010
* From the T10 Reflector (t10 at t10.org), posted by:
* "Mona" <monika.sethi at nsysinc.com>
*
Hello Mignon,
This is possible if both the PHYs is associated with the same Wide Port.
In your case, since PHY A and PHY B both are part of same wide port, both of
these can transmit Data Burst of the single command.
Best Regards,
Mona
nSys
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of Mignon
Fernandez
Sent: 03 February 2010 07:45
To: t10 at t10.org
Cc: Mignon Fernandez
Subject: Question about SAS Wide ports & first burst data
Hello,
Regarding Wide Ports, is it possible for the initiator to transmit the first
burst data using a different phy from the phy used in transmitting the
command?
Please refer to the diagram below (both connections are open).
Target Wide Port
Initiator Wide Port
+-----------------+ +-----------------+
| | | |
| +-----------+ | | +-----------+ |
| | |<-+-------WRITE CMD0------+--| | |
| | | | (first burst enabled) | | | |
| | PHY A | | | | PHY A | |
| | |--+----------ACK----------+->| | |
| | | | | | | |
| +-----------+ | | +-----------+ |
| | | |
| +-----------+ | | +-----------+ |
| | |<-+------WRITE DATA-------+--| | |
| | PHY B | | (first burst data of | | PHY B | |
| | | | CMD0) | | | |
| +-----------+ | | +-----------+ |
| | | |
+-----------------+ +-----------------+
Thanks!
*
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