![]() When creating snapshots, you can choose to save the memory of the virtual machine. There are various configuration options available when creating snapshots. ![]() This is to unlock the underlying virtual disks so that the backup software can copy them. You'll also find that many virtual machine backup solutions need to take a snapshot of virtual machines before they get backed up. If something goes wrong with an application, configuration change or during operating system patching, the virtual machine can be reverted to exactly how it was before commencing with the work. Most commonly, IT admins will create snapshots on virtual machines before making major changes to applications or the operating systems within the virtual machine. ![]() This includes all virtual machine hardware like disks, memory, and CPU network cards, as well as the power status (powered on, off, or suspended) if selected. If you revert to a previously created snapshot, the virtual machine will be put back exactly as it was at the snapshot creation time. When you take a snapshot of a virtual machine, the power status, virtual hardware and data are saved as part of the snapshot. This makes them incredibly functional for busy VMware administrators. The great thing about snapshots is that they can be created in seconds and reverted to in seconds too. If snapshots are large, then they can take some time to merge. Snapshots should not be left on a virtual machine for too long, this is because the placeholder disks grow in size and can eventually fill up your datastores.ĭeleting a snapshot will remove the ability to recover the virtual machine to the time the snapshot was taken, it will also merge all changes made on the placeholder disk, with the original virtual machine disk. Under the hood, the changes on the placeholder disk are discarded. This means that if you ever need to "rewind" the virtual machine back to the time you created the snapshot, you can do this in just a couple of clicks.
0 Comments
Leave a Reply. |