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Need to prevent Server 2012 Hyper-V Guests from performing Saved State Backups

Posted on 2015-01-23
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Last Modified: 2015-02-02
I have a Server 2012 Hyper-V host with numerous Server 2012 guests. Two of my guests are doing what I believe to be "saved state backups" and I need to figure out how to disable this as it interrupts my users when it happens during the day. I've been logged into the Host and seen it in action, the Status column says "Backing up..." and the State column for only two of the guests goes to Saved. I handle local snapshot backup using a third party solution and I also replicate the guests to an identical setup off-site so this Hyper-V backup that is happening is not needed. Preferably I will be able to turn it off as I'm sure its using resources I don't need it to be using. If it can't be stopped I need to figure out how to configure it so it doesn't do saved state. I would also like to know where the schedule is for this backup if it can't be disabled.

Here are the things I've tried/verified:
-Unchecked backup integration service
-Disabled Hyper-V Volume Shadow Copy Requestor service
-I performed a manual snapshot with the third-party service to ensure this is not what triggers the issue
-Snapshot file location is in the same place as the VHD
-Only basic disks exist in the problem guests
-I've updated Windows
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Question by:HumanScaleDev
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Accepted Solution

by:
Cliff Galiher earned 500 total points
ID: 40567236
Something, some app, some service is requesting a backup. hyper-V simply doesn't do this on its own. So start there.  As far as the rest, *enable* VSS and integration services and make sure they are up to date. A hyper-V initiated backup will only put a VM in a saved state if it can't backup online...snd that's to ensure consistency. Integration services and VSS are integral to that process and enable online backup and replication scenario.
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Assisted Solution

by:HumanScaleDev
HumanScaleDev earned 0 total points
ID: 40569364
Thanks for the response, I think I'm making progress now that I've abandoned the thought that Hyper-V had some type of backup it was doing on its own. I've re-enabled the backup integration service and the Hyper-V VSS Requestor service  on the guests but the issue continued. Verified Integration Services were up to date by clicking Insert Integration Disk again. I ran the command "vssadmin list writers" on the problem guests and no errors were returned but when ran on the host i got event ID 8193 and 22 logged in the application log. I took a look at the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\VSS\Providers which helped verify only Microsoft Shadow Copy and my third-party backup were listed as what use VSS. I removed the third party client side install from the host and now the list writers command does not error. Waiting to see if this in fact solved my issue, I'll post back once I know for sure.
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Author Closing Comment

by:HumanScaleDev
ID: 40583571
I'm selecting my own comment as part of the solution as it contains the details others may require.
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