![]() Hyper-V VM Backup Best Practices and Requirements If you lose the productive VM, you will be able to recover its state at the point of time when the backup was created. When deleting the checkpoint, Hyper-V consolidates (merges) the original and delta files, in the meantime the VM goes on working. Now the backup tool must copy the original VM files (no changes are written to them) to the backup media and then delete the checkpoint. After receiving the command, the hypervisor creates some new files (delta files) and the VM goes on working and starts saving changes in the files. The backup tool instructs the Hyper-V host to create a checkpoint. Currently, agent backup scenarios are rare, and are mostly used for the specific apps that do not support VSS. ![]() In the virtualization era the backup creation point has moved from the guest OS to the Hyper-V host, on which VMs are running. Previously, server backup was performed by a backup agent installed on each host. ![]()
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