Backing up a virtual machine (VM) is a complex process that requires knowledge and preparation. In this post, we are not going to discuss how to back up your VMware VM, but rather about basic mistakes that you need to avoid while backing up your VMware VM.
Treating Your VMware Snapshots as Backups
A common misconception is that a snapshot can be used as a backup. True, you can create multiple snapshots with different recovery points. However, if you use a snapshot from a previous point in time, you won’t be able to come back to your initial VM state. The only thing you can do is to use yet another snapshot from a previous point. Another problem is that snapshots can grow if they are retained for a long time. This happens due to the changes in your system, such as new installations or deletions. Your original snapshot may even end up bigger than a disk. In addition, your Logical Unit Number (LUN) is locked when your snapshot is growing. Because of this, other hosts cannot write to the LUN. A LUN is a number that identifies a logical disk, the storage area of your data.
Source: https://techbullion.com/mistakes-to-avoid-when-backing-up-your-vmware-virtual-machine/
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