Im in the market for a NAS solution. By NAS I don't mean running Jellyfin and some homepage thing for vibes, I mean your old-style "it just provides network attached storage".

I love the Jonsbo cases but I don't want to drop as much coin as building out a NAS based on one of them entails. I'm looking for an older office/home/gaming PC or case that has room for atleatst 4 3.5" HDD’s. Something around ten years old with maybe an i5 7th+ gen CPU. I don't need hardware RAID as I prefer ZFS anyway.

Ideas?