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Friday, 27 February 2015

How to monitor VMware SSD disk performance

At the time of writing, February 2014, there are no graphs to monitor to look at the cache ratio performance.
You need to use the esxcli command prompt against the host that the VM is currently situated on.

Enable SSH on the host and connect with your SSH client - probably Putty! :)
Log in and type
esxcli storage vflash cache list
That will provide you with a list of VMDKs that have got SSD caching enabled against them.  They are usually  vfc-<unique number references>-<servername><VMDK number>
So now type in

esxcli storage vflash cache stats get -c <That string of stuff>

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