July 22, 2021 at 1:58 pm #23572robertdoxonParticipant
VMware snapshots are quick and easy way to save a state of a virtual machine (VM) before you test a patch, software update or other change. The VMware snapshot preserves the state and data of the VM at the current point in time, so when you are done testing, you can quickly revert the VM back to a desired state.
When you take a snapshot, the state of the virtual disk is preserved, which prevents the guest operating system from writing to it (it becomes a read only). It triggers the quiescing of the VM and flushes the disk contents out of the file system cache, via Volume Shadow Copy Service (VSS).
It is important to note that the snapshot by itself is not a backup – but it can be used as a critical part of the backup process. Personally I use nakivo vsphere backup
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