Another post-install issue is where to get tapes. There are second-hand LTO6 tapes costing around 10 USD, which basically is a blindbox. You never know the condition of the tape until you get it.

The brand new LTO6 tape is around 30 USD each. Guaranteed in excellent condition, but expensive. Considering I'll store the same file on 3 tapes to ensure safety, that's not cheaper than a HDD. (But with HDD, now I only have a unraid to check the files are good, I have no back up )