VMware snapshot perf impact to VM

Sid_F
Sid_F used Ask the Experts™
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So I have read lots of articles about vm snapshots best practice as they have impact on performance. What I am not clear on is if I drill into my VM and look at the memory and cpu will I see and increase in the VM or is this all outside the vm on the actual host that it is busy?

and secondly when I am consildating a snapshot will my vm slow down
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Andrew Hancock (VMware vExpert / EE Fellow)VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017

Commented:
and secondly when I am consildating a snapshot will my vm slow down

Yes.

Host and VM will be busy.

The datastore, storage I/O will be high, and hence IOPS will be reduced in the VM, e.g. reading and writing to disk

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Commented:
Is there any way of knowing how long snap shot will take to commit.
VMware and Virtualization Consultant
Fellow 2018
Expert of the Year 2017
Commented:
That depends on how large the snapshot is, speed of datastore, if the VMs on.

Underlying technology of datastore.

You can look at the task information, but it only gives a percentage to complete.

So NO not really, it could be seconds, minutes, hours, days or weeks!

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Commented:
thanks

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