Do you delete old snapshots before making a new one?
14/02/2011 5:29 PM by
Snapshots are a very handy tool for a System Administrator, but they can quickly turn into a nightmare if they are not managed properly. Snapshots take far more hard drive space than a virtual machine without, and if you don’t clean up your snapshots you may run out of drive space.
Figure: Snapshots are useful, but they can take up a lot of space
When you delete a snapshot you can no longer restore the virtual machine to the point in time the snapshot was taken. Deleting a snapshot does not affect any other snapshots, nor will it affect the current state of the virtual machine.
Set yourself a calendar reminder 3 weeks after you make a snapshot so you remember to apply the snapshot to the Virtual Machine (assuming you are happy with the virtual machine after the snapshot).
- In the Hyper-V Manager, click on the virtual machine you want to apply the snapshot to
- In the Snapshots window, right click on the snapshot you wish to apply and click Delete Snapshot…
- Confirm the snapshot deletion.
- Wait for the merge process to complete (this may take a while if you have had the snapshot running for a long time and it has grown large in size).
Do you feel this rule needs an update?