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VM automatic startup with ESXi cluster

Posted on 2011-02-18
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Last Modified: 2012-05-11
I have a simple ESXi cluster with 2 servers using HA. I want to enable automatic startup of the VMs in case of a total power failure to the site and the entire cluster goes down.

I see where the option is within the host to enable automatic startup, but I am not sure if this will create a conflict within the cluster. If both machines shutdown I would think there would not be a problem.

However I am not sure what will happen if the host that this setting is made on shuts down and the VMs move over to the standby server. Then that host that failed starts back up. Will the VMs try to start again on the server making duplicates fo the VMs?
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Question by:ryan80
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by:bgoering
ID: 34926778
This is not recommended in a HA environment as it will confuse the HA process when the other host comes back and attempts to start a vm that has failed over and been started on the other host.
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bgoering earned 500 total points
ID: 34926791
This thread (http://www.experts-exchange.com/Software/VMWare/Q_26805178.html#a34842968) we discussed this very issue just a couple days ago.

Good Luck
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by:ryan80
ID: 34927819
In my setup I only have 2 hosts. one is active and the other is just there for HA. Is it possible that I could have the host start up the VM's and the files will just be locked so it wont be able to if they failed over via HA?

Or will this cause more problems than it is worth?
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by:bgoering
ID: 34928345
I would expect that it may cause issues - you can't anticipate every which way things could possibly fail. In that other thread I had a link to a doc where vmware strongly discouraged even trying it - I bet they have their reasons.
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by:ryan80
ID: 34928610
yeah, i am sure that there is a reason it is in the manual. Well I will just plan on having to start the VM manually in the case of a power outage. It would just be nice to have that ability.

Thanks
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