Deciphering output of MSA1000 show perf

Lonnie Paschall · ‎09-19-2007

We have been having some issues with our database which is housed on a MSA1000 with 2 MSA30's attached. We are running A/P with redundant SAN switches. Servers are DL585G2's running Win2003/X64.

MS has insisted we are have disk issues. I have attached the info MS sent us and the output I have pulled from the MSA1000.

Does anyone see anything "suspect"?

Lonnie Paschall · ‎09-19-2007

Take a look at the avg read and avg write latency!

John Kufrovich · ‎09-20-2007

Lonnie,
There hasn't been enough IO to the LUNs with high latency for it to settle.

jk

Neal Bowman · ‎09-20-2007

Lonnie,

How many servers do you have connected to your MSA? There is a practical limit of devices to connect to the MSA.

What command did you use to get the transfer rates for the physical disks?

Lonnie Paschall · ‎09-20-2007

I will start perf on the MSA today and collect about 4 hours of data and post it later this evening.

MS collected the data but I think they were using Perfmon or some counter within SQL.

We have only one server accessing the MSA1000.

Lonnie