blog post wrote:The new process involves the use of checkpoints instaed of VSS to backup the VM (VHDX). Originally when backing up Hyper-V VM’s a VSS snapshot would be created, mounted, and that VSS snapshot would be backed up. similar to how we backup (or used to before we started backing up VM’s) Exchange, SQl AD…
The new way basically involves taking a checkpoint (formally known as a snapshot) of the VM, the checkpoint freezes the VHDX file and performs all new writes to a temporary AVHDx file. Thus while the checkpoint is active the original VHDX files can be backed up.
The one thing to take note of is that a checkpoint is crash consistent and not clean.
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