Request: Average VM Disk Latency for Powered on VMs

[gregpeck]

We are interested in finding the average VM Disk Latency as seen by the Powered on VMs.

We have made a group (Group-PoweredOnVMs) in vCenter Ops that has all the powered on VMs.

We see that group in the Environment section on the Environment Overview.

We created a super metric (SM-AvgVMDiskReadLatency) to avg the Disk Read Lantency (avg(Virtual Machine: Disk|Disk Read Latency (ms)))

Associated that super metric with a package (SMPkg-VMDiskMetrics)

In the Resource Kinds section of the Environment Overview we have selected the group (Group-PoweredOnVMs) and associated the super metric package

However, when we put that super metric on a metric graph, NO DATA.

Any ideas on how to go about doing this? It seems that every time we try to use a dynamic group, we don't get data.

Thank You!

[mark_j · Accepted solution]

You need a relative reference with ^N.

You've got a group - great. However you want to look a descendant relationships exactly 1 step below the group resource.

Do this: avgN(Virtual Machine: Disk|Disk Read Latency (ms),1)

[aaghabekyan]

Yes I agree with mark.j you should use avgN and mention depth in formula, if it does not resolve your problem, check if your system (vcops) collects data for disk latency metric.