Using PowerCLI it’s pretty easy to find all the VM’s in your environment that have IOPs limits set.

get-vm | Get-VMResourceConfiguration | `
         Select VM -ExpandProperty DiskResourceConfiguration | `
         where {$_.DiskLimitIOPerSecond -gt 0} | `
         Select VM, DiskLimitIOPerSecond

This will give you a list of all VM’s where the IOps limits are not 0. You could change the condition to find VM’s with different disk shares, specific limits or any combinations there of.

Hope you find this useful 🙂