Limit IOPs

[DavoudTeimouri]

I have a problem about limiting IOPs. There is a VM that has two disk on a LUN and each VMDK limited to 100 IOPs and VM has 200 IOPs totally.

But the VM generated 1750 IOPs today!

Is there any configuration that we missed on our server or VM?

[ThompsG]

Hi,

Sorry for the dumb question but just confirming that the VM only has the two disks attached that you mention with IOPS limits? You don't happen to have a third disk with unlmited set. Like I said dumb question

Kind regards.

[DavoudTeimouri]

No there is only two disks and each disk is limited to 100 IOPs

[vXav · Accepted solution]

Can you try to change thefollowing host advanced setting and try again?

Disk.SchedulerWithReservation = 0

[DavoudTeimouri]

I found the answer.

ESXi does not apply bandwidth and throughput limits when both are configured for a SCSI virtual disk...