Vmware IOPS

Alfred Lim
Alfred Lim used Ask the Experts™
Hi Experts,

have customer using VMWARE and have 20VMs, using netapp storage ( im not familiar with vmware and also netapp)

customer right now need to migrate it to new storage, but he is asking which is the right storage , he had a prefer brand which is HP.

How do i start to help on my customer? start calculating his current IOPS for each VM? How can i measure? and which HP storage to propose?

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Firstly, you need to understand, how is the storage currently presented from the NetApp SAN to ESXi Host, Fibre Channel, iSCSI or NFS, as he NetApp can support all three technologies.

and the easiest method to investigate how many IOPS the current device (NetApp) is delivering is using the NetApp ONcommand System Manager application which will show you at the highest level how many IOPS are being created, historically.

To look at IOPS per VM

see this VMware document


IOPS are available from vCenter Server performance charts.

Also see my EE Article

HOW TO:  Performance Monitor vSphere 4.x or 5.0

and look at the storage section


Thanks Andrew. Let me go through it first before i ask more question.

appreciate that

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