Microsoft: In Hyper-v Snapshots fail to merge with error 0x80070070

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Snapshots fail to merge with error 0x80070070


Applies to: Windows Server 2008, Windows Server 2008 R2 

Error:
Snapshots fail to merge with error

 Cause:
Low disk space.


Resolution:
Create additional free disk space to allow the merge to complete, or move the .VHD and .AVHD file to a volume with sufficient disk space, and then manually merge the snapshots.

Note: Snapshots based on fixed .vhd files hold the free space that has been pre-provisioned inside the fixed vhd. Snapshots are dynamically expanding by nature and running a fixed-vhd VM on a snapshot for a long time means you lose the performance benefits of fixed vhd files. You should commit the data in the snapshot as soon as possible after it has served its purpose.

RESOURCES:

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