RE: "all green lights" from SAs

One more thing to add on this - the last time it happened to me, they reported all disks looked fine from their monitoring/management software and we went back and forth about it for 3.5 hours. It wasn't until I asked them to quadruple check that someone actually walked back into the datacenter and looked at the array that they saw one of the disks had its amber light on. So if you suspect a bad disk, don't rely on the monitoring software - walk back and look at the actual disk array.

-----Original Message-----

From: Allen, Brandon
Sent: Thursday, March 22, 2007 11:36 AM
To: 'ganstadba_at_hotmail.com'; oracle-l_at_freelists.org Subject: "all green lights" from SAs

When my SAs give me something like that, I give the output from "sar
-d", and historical stats from perfview or HP OpenView Performance
Manager showing that I usually get service times of 2ms and I'm currently getting service times of 100ms and then they eventually figure out that the disk array is running slow because the cache has been disabled, or it was enabled for a LUN that it is supposed to be disabled for, or there is a bad disk being rebuilt in the RAID 5 array.

Regards,
Brandon

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Michael McMullen

I guess I'm just bitter from always getting pages of meaningless printouts showing "all green lights" from SA's when I complain about slow disks.
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http://www.freelists.org/webpage/oracle-l Received on Thu Mar 22 2007 - 13:47:10 CDT