I am trying to interpret storage utilization data from our ESX servers but I am not sure what
counters to look at, and when I get that data determining exactly what it means.
Currently I am going through Virtual Center and looking at the performance tab. I have Disk Usage (Avg) pulled up and it shows a maximum of 9,279 KBps with an average of 2,022KBps. I truthfully dont know if those are high numbers or not, or if ESX storage counters need to be interpreted with a formula based on hardware.
This server is a local storage server with (6) 15,000RPM SAS drives.
What data should I be looking at for the counters to determine a disk io problem, and at what point in time should I be concerned that I have overloaded the server and need to migrate to another storage device or server ?
Attached: Stacked Graph of Disk usage (average) over the past week.