Thanks for the reassurance. What I currently have is exactly that, RAID for the local data, and a spare drive that is mounted and unmount when data is backed up, and that is rsynced offsite to a cloud provider. I figured that my current setup was really reliable as I had slowly been researching and working on this over a few years.

I have a sort of itch to play with a mini PC, I guess it would be best not to hurt any of my important data by downgrading the setup, however this is a good time to really sort and figure out what I need and is important and what isn’t as important and can be reobtained if something fails on the mini PC.