Measure Disk I/O's Host side.

Question

How do I measure I/O's from the host side? I am looking at perfmon on Windows and I believe I have found it it under the Perfromance Object: Process. There are counters there that are labled I/O Data Operations/sec. I want to verify that the Perfmon Process: I/O Data Operations/sec is the Navisphere Analyzer equivalent of Total Throughput (IO/s). If it is not please point me in the right direction.

Thanks,

Mike

RyanP2 · Answer

I don't believe that is the correct item you are looking for. After some research I believe what you are looking for is PhysicalDisk (under the Performance Object drop down) and under there Disk Transfers/sec. The definition in Perfmon is "Disk Transfers/sec is the rate of read and write operations on the disk".

Remember that the disk in this case is the lun.

I would say most things under the PhysicalDisk performance object should be close to what Navisphere Analyzer shows for the lun stats.

One thing you may run into is that Perfmon may take more data points than Navisphere Analyzer (lowest rate analyzer can do is 60 second intervals). This will mean the data won't pefectly match.

-Ryan

mpalumbo1 · Answer

Thank you for the help. You have given me another question that I will post in the forums.Mike

SKT2 · Answer

'powermt check' would give the IO/Sec per HBA; may be you add from all HBAs

CLARiiON

Measure Disk I/O's Host side.

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