my personal blog about systemcenter

Changes in Hyper-V Backup in 2012 R2

Aidan Finn pointed out in a recent post that there are changes in 2012 R2 Backup of Virtual Machines

http://www.aidanfinn.com/?p=15759 , as always its a good read

One change is that we rely on snapshots on the virtual machine what this looks like from a backup point of view

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Create the Backup Job

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Start the Backup

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We can now see that a snapshot is being created will redirect write IO to the avhdx files

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We can see the avhdx files created when the backup starts

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And after the backup is complete the snapshot is being merged

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Creating a additional backup

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Repeats the pattern , shapshot backup cleanup

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For recovery we can see the snapshots created during backup and a full recovery restores both vhdx and the xvhdx file

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DPM == Sucess

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And when we start the recovered VM it merges the delta files , and we can start the VM again

VM was consistent and didnt show any unexepted shutdown error when restarted