Subj : Re: Proton
To   : dflorey
From : Arelor
Date : Sat Apr 05 2025 09:41 am

  Re: Re: Proton
  By: dflorey to poindexter FORTRAN on Thu Apr 03 2025 10:01 pm

 > If I was to move to Proxmox (which I haven't ruled out), I would want to
 > ensure backups and restores are very painless, allow restoring part or all
 > of an instance, or the ability to mount a backup and pull files from a
 > virtual disk.

Proxmox backup is like restic for images of virtual machines.

Things to consider is Proxmox Backup (server) is desgined for being used by the Proxmox Virtual Environment mainly. It is not like they make it easy to push backups from non-proxmox and to non-proxmox. You can kind of do it but that is not what it is designed for.

Proxmox backup is mainly designed to take snapshots of your virtual machines and restore snapshots of your virtual machines in an atomic operation. This means you are not going to be able to fish for a single TXT file in your backup pool if you want to restore it. With Proxmox you get to restore the whole virtual machine or nothing. (Proxmox actually has a host mode but I don't think many people use it).

Basically, the idea with Proxmox backup is to be able to recreate your virtual machine fleet if your favourite elephant steps on your Proxmox VE server or something. And it is very good at that, btw.

The advantage of Proxmox backups are that you can take differential backups very quickly and keep a historical archive in an automated way. This is, you can take a daily backup if so you wish and every time you take a new snapshot only changed data blocks will be stored, so the whole operation is relatively quick. Proxmox backup also lets you restore from different points in time (say you discover a file was lost a month ago but you just realized today. You can restore your virtual machine from a snapshot just before the file was lost).


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