Six reasons why snapshots can’t replace virtual machine backups
What is a snapshot?
A snapshot captures the active configuration, memory, and storage system of a virtual machine. Any change made to VMs after a snapshot is created is written on the snapshot while the actual VM hard disk remains unaltered.
Although snapshots might look like an adequate method for VM backups, they have a few major drawbacks. This blog will explain why snapshots should be used sparingly and not considered a substitute for backups.
1. Snapshots do not actually back up your data.
Snapshots are merely differencing disks created by the hypervisor. A differencing disk is a special type of virtual hard disk that has a parent/child relationship with the primary virtual hard disk. Once the differencing disk is created, all write operations are directed to the differencing disk. The virtual machine’s primary hard disk remains unaltered, which makes it possible to roll the virtual machine back to an earlier point in time.
Read the entire article here, Six reasons why snapshots can’t replace virtual machine backups « ManageEngine Blogs
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