I started with proxmox and I'll continue to use it because it's very nice to use. As backup I use an rclone mount that is shared via NFS (everything inside a container) and I set that NFS share as a backup storage in proxmox. I think it is a bit convoluted but works fine enough for now.
How does the recovery partition work? I mean, I always thought it was a "copy" of the iso so that you can reinstall the system without an external USB drive
Another important aspect of a reverse proxy is that it helps you with SSL. So your services (like Plex or whatever you want) doesn't support SSL but you can manage to do it with the reverse proxy
I had the same problem months ago and I simply did clear and scrub. Never occurred again even if I noticed that the drive that failed is slower then the others (average access time is the double). I'll change it in a couple of months, hoping it lasts until then
I want to know more đł do you have something? A link?