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To summarize, we want to be communicated to users that snapshots do not qualify as a disaster recovery strategy.
But they are a good addition to an existing strategy.
Crash-Consistent snapshots vs application-consistent snapshots
The Crash-Consistent snapshot contains an immediate state of the disk. As if there was a power cut-off at the point of
snapshot creation. Whatever was in memory is lost. For modern applications, Crash-Consistent snapshots are enough
because they are designed to tolerate power cut-offs. The
The application-consistent snapshot is created with the
collaboration the collaboration of the app running in the VM. Of course, the
application needs to be aware of the snapshot being taken
to taken to flush all the data before it happens.
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