https://www.freedombox.org/apps/

Whatever you end up doing immediately after you finish setting it up, throw some files on it you don’t care about and practice breaking and reassembling your RAID a few times before you put anything important on it. You want to understand the basic process before things fail.

…they just make you do manual registration if you use third party toner

Man, if only we had a word for disabling critical features in this way.