Live incremental backups on Proxmox VE
- Thread starter mr.ken84
- Start date
I don't know "PSB", and assuming it is not a typo: Did you take a look at PBS (Proxmox Backup Server) [1]? With PBS you will do fast backups which are full and incremental at the same time [2].
It works great but SSDs are recommended for the datastore as many little chunks are stored for deduplication.
If the VMs are not stopped between backups it will only backup the changed sectors via a dirty map.
[1] https://www.proxmox.com/en/proxmox-backup-server/overview
[2] https://pbs.proxmox.com/docs/faq.html#is-the-backup-incremental-deduplicated-full
you are misunderstanding my problem,
i am using both types of backup (PBS and backup of hard drives mounted on the same physical server).
if backup via PBS then yes incremental at the same time but if i backup via PVE then it doesn't have the function incremental at the same time like on PBS (attach files).
i am using both types of backup (PBS and backup of hard drives mounted on the same physical server).
if backup via PBS then yes incremental at the same time but if i backup via PVE then it doesn't have the function incremental at the same time like on PBS (attach files).
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That's by design, vma-Backups are never incremental but always full backups as explained in the manual:
https://pve.proxmox.com/pve-docs/chapter-vzdump.html
Just to clarify: PBS always does a full backup but it deduplicates automatically (which saves on network transfer and storage). That's different from what most people call an incremental backup, where you need both the original backup and one or more increments to restore it.
I fully agree but one small addition: If you have change block tracking, you will only transfer those changed blocks, which can be seen as a kind of incremental backup and it does not read the whole VM again. This does of course only apply to PBS.