It sure will handle a remote VPS, it’s just not as automatic to set up as it is with PVE.

I put this off for a long time, but I finally did it this weekend.

Basically, you install the proxmox-backup-client utility and then run it via cron or a systemd timerto do the backup however often you want.

You’re responsible for getting the VPS to communicate with your backup server (like pretty much any self-hosted service), so some sort of VPN between them would be good. I used NetBird for that part and I have a policy that allows access from the client to PBS only on TCP port 8007.

I’ve been quite happy with Proxmox Backup Server. I’ve had it running for years and it’s been pretty solid for all my VMs/containers. There’s also a bare metal client, which I’m adding to a couple cloud VPS machines this weekend. We’ll see how that goes.

Also, since it’s just Debian under the hood, I also use the PBS host as a replication target for my ZFS datasets via sanoid/syncoid.