I picked up an old Dell Optiplex tower and slapped 4 cheap 4 TB drives in it. Setup as RAID 5 I got 12 TB of "redundant" storage for cheap! Perfect spot to keep all the p0rn torrents.
But I used OpenMediaVault for that deployment. It's been OK.... but I kinda feel that I am missing out on some of the more active developments of other distributions.
Despite that, I would absolutely suggest grabbing an old office computer and throwing some drives into it for a home NAS.