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marieelieg
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Backups causing VMs to shutdown

Post by marieelieg » Oct 23, 2016 6:54 pm

Hi everyone.

So I have a hyper-v cluster. I created a backup on a VM and made it run during the night. In the morning I found that their was a .avhdx file in the LUN of the VM and the VM was shut down. I believe that this .avhdx file was growing too big and there wasn't enough free space in the LUN and that's what caused the VM to shut down. What I want to know is what is this .avhdx file and is there a way to explicitly specify where Veeam should create it?

Really appreciate any help and thank you in advance.
Marie-Elie.

Andreas Neufert
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Re: Backups causing VMs to shutdown

Post by Andreas Neufert » Oct 23, 2016 7:24 pm

It is hard to say based on the given information`s what the root cause is.

.avhdx is a SnapShot/Checkpoint file.

I highly recommend to immediately create a Veeam Support ticket (this forum is not part of Veeams Support organisation). As your production is down, you can create a severity 1 to have super fast reaction time.

marieelieg
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Re: Backups causing VMs to shutdown

Post by marieelieg » Oct 23, 2016 7:41 pm

Thank you, will do.

But is there a way to manually change the location of this checkpoint/snapshot?

Andreas Neufert
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Re: Backups causing VMs to shutdown

Post by Andreas Neufert » Oct 23, 2016 8:25 pm

The Checkpoint folder can be edited in the VM properties. Managment - SnapShot/Checkpoint File Location.

I do not know if this has performance drawbacks.
At least for Windows 2016 you should let them stay on the same volume to use ReFS internal operations that reduce overhead of creation/deletion of that files to nearly zero.

marieelieg
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Re: Backups causing VMs to shutdown

Post by marieelieg » Oct 24, 2016 7:55 am

Okay thank you very much. Will see what happens.

Vitaliy S.
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Re: Backups causing VMs to shutdown

Post by Vitaliy S. » Oct 24, 2016 9:37 am

Additionally, you can consider installing Veeam ONE Free to monitor VM snapshots and be alerted if VM snapshot is not removed after a backup job.

marieelieg
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Re: Backups causing VMs to shutdown

Post by marieelieg » Oct 25, 2016 7:06 am

Okay thank you so much:D

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