The term backup is not something you would use in Hyper-V, you mean are looking for a snapshot. Complete the following steps to create a snapshot of your virtual server:
1) Go into Hyper-V Manager 2) Right Click on the virtual machine you are looking to snapshot/backup 3) Select Snapshot 4) In status you will see "Taking Snapshot (%)" 5) Once completed click on the virtual machine and in the bottom of the screen you will see your new snapshot 6) Right Click on the virtual machine in the snapshot and you will see you have multiple options that will complete the following:
APPLY: Apply this as your current server, overwriting/Restore the current virtual server
EXPORT: Export the snapshot/backup to another disk/location RENAME: Obvious, lol DELETE SNAPSHOT: Deletes the snapshot DELETE SNAPSHOT TREE: Deletes all snapshots for the virtual machine.
You can now, or down the road, use this snapshot as a backup to restore from.
Ryan provides excellent guidance on creating a snapshot. If you're looking for long-term or archival backup, consider the use of a dedicated tool, such as Microsoft Data Protection Manager 2010. DPM 2010 has native support for backing up and recovering Hyper-V-based virtual machines as well as host configuration.
I would not recommend using snapshots in a production environment. Perhaps they are fine for short-term usage, but for general backup purposes I would never use snapshots. We use Windows Server Backup on external USB disks.
Completely agree. The only time I really rely on snapshots is if I'm going to do something that might be disruptive and then, I still prefer to use a proper backup tool. There is particular danger in using snapshots against certain kinds of systems, such as domain controllers. I guess my advice would be: When in doubt, use backups instead!