How would I handle backups though? I have some data I should definitely back up in some way, e.g. Nextcloud or paperless-ngx. A mirror is good but doesn't replace a backup :D
That's why I brought in Proxmox Backup Server, not sure if that's overkill though or if I can backup using Proxmox VE itself. I've also read about people running Proxmox Backup Server as a VM inside Proxmox. That way I only have one physical machine but I'm not sure how complicated it would be to access the backups if the Proxmox VE host itself goes down.
I don't have that option:
Doesn't help if I tap subscribe before either.
Edit: Found it! It's not possible when searching for it but it works in the "Feeds" section: