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Calculating IOPS on RAID Volume using Performance Monitor on Windows 2003/2008
I'm interested in what values the experts here would use to calculate their IOPS on a RAID volume using Perf Mon. I'm interested in moving multiple RAIDs to a SAN and the vendor asked me what my IOPS expectations were.
Thanks.
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by: meyersdPosted on 2008-12-17 at 22:35:02ID: 23201085
Open Perfmon, remove the existing counters and add: Physical Disk - Disk Reads/sec and Disk Writes/sec - these are the IOPS counters. You need to know the peak Write and Read IOPS. The average I/O size is handy as well - Avg Disk sec Read and Write. This figure will give you an idea if your workload is random or sequential. Bandwidth (MB/sec) is usually less important to calculate for as most workloads are highly random, and if you get the IOPS sizing correct, the MB/sec is usually taken care of.