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  1. Home
  3. Veritas NetBackup™ for Hyper-V Administrator's Guide
  5. Back up and restore Hyper-V
  7. The BAR interface may list Hyper-V snapshot files when you browse to restore Hyper-V VM files
Veritas NetBackup™ for Hyper-V Administrator's Guide

The BAR interface may list Hyper-V snapshot files when you browse to restore Hyper-V VM files

On Windows 2012 R2 Hyper-V servers, the NetBackup Backup, Archive, and Restore interface may list Hyper-V snapshot files when you browse to restore VM files.

For example:

In this example, apvm-AutoRecovery.avhd is a Hyper-V snapshot file (apvm.vhd is the parent vhd file).

NetBackup automatically uses or ignores the snapshot data as appropriate when you restore the VM to its original location or to a different location.

However, in the following case you must decide whether to restore the Hyper-V snapshot file or to exclude it from the restore:

  • In the BAR interface you select Restore from Virtual Machine Backup.

  • And on the Restore Marked Files dialog, you select Restore to staging location.

In this case, use the following criteria (based on Hyper-V server version) to identify the snapshot file and to decide whether to restore it:

On a Windows 2012 R2 Hyper-V server

For VMs with a Windows 2008 or Linux guest OS: The Hyper-V snapshot file is ChildVhd.avhd or ChildVhd.avhdx. The data in this snapshot is not application consistent. In most instances it is best not to restore this file.

Note:

If you select Restore to Hyper-V server or Restore to different locations on same / different Hyper-V server, NetBackup automatically excludes the snapshot file.

Note:

In the snapshot's parent file (apvm.vhd in the example) and in the other VM files, the data is complete. To restore the VM data, you should restore those files.

On a Windows 2012 R2 Hyper-V server with the 2012 R2 update of April 2014

For VMs with a Windows 2008 or Linux guest OS: The Hyper-V snapshot file is named vmname_guid.avhd or vmname_guid.avhdx. The data in this snapshot is not application consistent. In most instances it is best not to restore this file.

Note:

If you select Restore to Hyper-V server or Restore to different locations on same / different Hyper-V server, NetBackup automatically excludes the snapshot file.

Note:

In the snapshot's parent file (apvm.vhd in the example) and in the other VM files, the data is complete. To restore the VM data, you should restore those files.

On a Windows 2012 R2 Hyper-V server with or without the 2012 R2 update of April 2014

For VMs with a Windows 2008 R2/2012/2012 R2 guest OS: The Hyper-V snapshot file is AutoRecovery.avhd or AutoRecovery.avhdx. The data in this snapshot is application consistent. To restore the VM data, you should restore this file along with the parent vhd(x) file.

Note:

If you select Restore to Hyper-V server or Restore to different locations on same / different Hyper-V server, NetBackup automatically incorporates the snapshot data in the restore.

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