vzdump backup speed and guest VM speed

kev974

Active Member
Jul 12, 2016
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Hi!

I wanted to know if vzdump backup speed for a VM is limited by its disks speed inside the guest OS?

For example if just copy/paste inside the same VM speed is less than 100 MB/s could we expect to get vzdump speed being more than 100MB/s for that VM or could it be faster?

The disks are raw image and OS are Windows 2012R2 and windows 2008 R2 and Virtio with cache writeback.
Backup speed is not much than 70MB/s for windows 2008 enven if our network is 10Gb and our san is Full flash.

Sincerely,