The original REPORT PHY ERROR LOG has four saturating counters for those events.  These are mandatory.
 
The new REPORT PHY EVENT INFORMATION has four wrapping counters for those same events.  These are optional.  Wrapping counters are easier for multi-initiator systems to track.
--
Rob Elliott, elliott@hp.com
Hewlett-Packard Industry Standard Server Storage Advanced Technology
https://ecardfile.com/id/RobElliott

 

From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Lau, Victor
Sent: Tuesday, May 23, 2006 8:16 AM
To: t10@t10.org
Cc: Lau, Victor; Seto, Pak-lung
Subject: Question for phy event counters

In sas2r04 spec page 103, it states the following events should use the saturating counters

 

Phys shall count the following events using saturating counters and report them in the Protocol-Specific Port

log page (see 10.2.8.1) and/or the SMP REPORT PHY ERROR LOG function (see 10.4.3.6):

a) invalid dwords received;

b) dwords received with running disparity errors;

c) loss of dword synchronization; and

d) phy reset problems.

 

However, on p.104, table 24, these 4-events are using counter type “wrapping counter”

 

Thus, which type of counter we should use?

Thx

Victor