Several considerations are I/O to the vm to go back to the last snapshot before starting mass?

We have an environment Vsphere 4 with 8 hosts esxi by cluster.  In this group, we have a 512 GB which holds all the linked clones and master vms data store.  This is of course a test environment...

We need to start to 30 virtual machines both to perform automated tests.  In the past these 30 vms would be quick and easy start without problems.  Recently, we have begun saying the vms (via vmware API) to restore the vms to the last snapshot system before starting.  This has made the EXTREMELY long vm startup process and we cause problems.

So, I guess that going back to the last snapshot is whats is the problem?  My questions are:

(1) correct, it's the instant return the cause?

(2) indeed, what happens when you start a virtual machine and it loses any changes is when the last on and just comes back?

(3) is it just kill our I/O?  What else does?

If it is a problem of e/s SAN then I can look at to balance our load LUNS, etc. but first, I need to know what is happening under the hood to properly address this.  Is there another method to reach our ultimate goal without causing such performance issues?

Yes, it's what I would say.  Spread your VM snapshot across different data warehouses as much as possible, who can help with your distribution of IO.

Lacking that, I can't see much else you can do.  Given your criteria for the scripts, and a simpler approach, I see your point to keep things simple and unified.  I have a better solution for you.

Tags: VMware

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