Understanding Disk Performance Metrics in perfmon
Posted on 2012-09-10
We're trying to review the disk activity for a client server to see if it is the cause of recent performance issues and we're currently looking at disk activity on Performance Monitor (built into Windows Server 2008, perfmon.exe).
We're looking at the following items:
Logical Disk \ Disk Transfers/sec
Logical Disk \ Disk Bytes /sec
Logical Disk \ Disk Read Bytes /sec
Logical Disk \ Disk Write Bytes /sec
Logical Disk \ Avg. Disk sec /Transfer
Logical Disk \ Avg. Disk sec /Read
Logical Disk \ Avg. Disk sec /Write
The server is running two SATA 7200 RPM hard drives in a RAID 1 environment.
Can someone let me know what I should expect for some of these metrics. Without anything to compare these numbers to, I don't know if they're high or low.