Hyper-V restore may fail if the VM was created on a CSV and the CSV is a reparse point on the destination drive
For Windows server 2008 and 2008 R2: NetBackup blocks the attempt to restore a Hyper-V VM to an alternate location in the following case:
The VM was created on a Hyper-V Cluster Shared Volume (CSV),
The CSV is mounted as a reparse point on a local drive on the Hyper-V server,
The reparse point on the local drive is specified as the destination for the restore,
And the VM is larger than the space available on the local destination drive.
For example:
The CSV is a reparse point on local drive C (C:\ClusterStorage\Volume2). The reparse point is specified as the destination for the restore.
The CSV has 50 GB of free space, but the C:\ drive has only 10 GB of free space.
The VM to restore is 30 GB in size.
In this case, NetBackup identifies the 10 GB of free space on the Hyper-V C:\ drive. It does not identify the 50 GB of free space on the CSV. NetBackup fails the pre-recovery check and the restore job does not begin. In the NetBackup Restore Marked Files dialog, the following message appears:
Data may not be restored successfully - there is not enough space available in the destination directory.
For VMs on Windows 2008 R2 and earlier Hyper-V servers, do the following: For the restore location, select a drive on the Hyper-V server that has free space at least equal to the size of the VM.