Applications Systems

Virtualization Manager determines the total IOPS for hosts, VMs, datastores, and clusters

Virtualization Manager (VMan) uses two different processes—based on the version— to determine the total IOPS for hosts, VMs, data stores, and clusters based on the version.

First published date

10/18/2018 7:31 PM

Last published date

10/18/2018 7:31 PM

Overview

Based on the version of vCenter you are using, Virtualization Manager uses two different processes to determine the total IOPS for hosts, vms, datastores, and clusters.

Product section

Virtualization Manager

Resolution

vCenter 4.1 or later

Virtualization Manager gathers information from Datastore performance counters.

The aggregate of two performance counters are used and then divided by the collection cycle.

(Average read requests per second across datastores + Average write requests per second across datastores) / Collection cycle per second

Note: NFS datastore information is accounted for in vCenter 4.1 or later.

vCenter 4.0.x or earlier

Virtualization Manager gathers information from Disk performance counters.

The sum of the number of disk commands issued per LUN is divided by the collection cycle.

Number of disk commands per LUN / Collection cycle per second

Note: NFS datastore information is not accounted for in earlier versions of vCenter

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