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Backup is in a completely different storage then the VM. It is a full clone of the disk
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Snapshot is a part of the VM. You can’t move it elsewhere, and it is inside the VM disk
- It makes sense when testing a specific software or a config
Include
Normally a snapshot is an image of the disk. You can capture the RAM with this, which is more powerful
Backup Modes
- Snapshot: Least downtime. Live backup. qemu-agent helps consistency
- Suspend: Not suggested via Proxmox. Similar to PC suspend mode
- Stop: Stops the VM, takes the backup (most secure)
Automatization
In “Datacenter” view and “Backups”, you can schedule backup jobs