SPL question on Device Name

Elliott, Robert (Server Storage) Elliott at hp.com
Tue Aug 18 14:18:02 PDT 2009


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No.  A given SAS address is not reused as both a SCSI device name and a SCSI
port identifier.
You can determine the device name by these means:
a) SAS target device: Device Identification VPD page; the device name of a
SAS initiator device
b) SAS initiator device: vendor-specific mechanism
c) expander device: the device name is carried in the SAS ADDRESS field (it's
not a SCSI architectural entity so the reuse prohibition doesn't apply)
From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of
Bill.Martin at emulex.com
Sent: Tuesday, August 18, 2009 3:23 PM
To: t10 at t10.org
Cc: Greg.Warren at emulex.com; Gus.White at emulex.com
Subject: SPL question on Device Name
In SPL r03, 4.2.6 states:
"Each expander device and SAS device shall include a SAS address (see 4.2.4)
as its device name."
In 6.8.2 page 245 it states:
"The DEVICE NAME field indicates the device name (see 4.2.6) of the SAS
device or expander device transmitting the IDENTIFY address frame. A DEVICE
NAME field set to 00000000 00000000h indicates the device name is not
provided in this field."
If the name is not present in the IDENTIFY address frame, can it be assumed
to be the same as the SAS address of the device?
Bill Martin
Emulex
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin at emulex.com



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