Question on phy event counters

Elliott, Robert (Server Storage) Elliott at
Mon Feb 11 07:18:34 PST 2008

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Yes, they are intended to count events per physical phy.
Rob Elliott, elliott at
Hewlett-Packard Industry Standard Server Storage Advanced Technology
From: owner-t10 at [mailto:owner-t10 at] On Behalf Of
Bill.Martin at
Sent: Sunday, February 10, 2008 1:31 AM
To: t10 at
Subject: Question on phy event counters
>From clause 4.2.8 of SAS2r14 there is only one PHY IDENTIFIER per physical
phy and the logical phys are associated with the same PHY Identifier.  This
means that phy events cannot be counted on individual logical phys.  Is it
the intent that all counts be an aggregation of the counts for the logical
phys within a phy?  Based on the responses to this, I will generate
clarifying letter ballot comments.
Thanks for any input,
Bill Martin
Office of Technology
Industry Standards
916 772-3658
916 765-6875 (Cell)
bill.martin at

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