How to properly organize a backup on proxmox?

Question

Backup

The first question - is there an incremental backup of the VM using Proxmox or using additional software?
Question two - how do you organize backup? Basically, we will have KVMs. The nodes themselves will most likely be used in isolation, how will the migration take place in this case? Do I need to make a full-fledged cluster out of nodes for this business?

Answer 1

1) no, almost any external system has an incremental system, put the one with which you worked, for example, a bakula inside a virtual machine.
2) I'm satisfied with a full backup.
3) kvm is isolated by default, and generally there cannot be two glued kvm, so it will not affect migration in any way.
4) how do you want to migrate virtual machines, if not a cluster?