I’m looking to see the answers myself. I’m a data hoarder on a budget. I went and bought the cheapest 4ghz capable cpu (I run security cameras also) and matching non oem motherboard I could find on ebay. I slapped a ssd and a 8tb hdd on it and called it a day. I run this in my basement and have Debian with ssh, samba and an http server (no port forwarding of course for security reasons) with a search engine I wrote that I use to search and find stuff from a browser (I have a lot of movies).

There are probably better ways to do this but it generally works for me. If you’re interested in hoarding hundreds and hundreds of TBs you’d need to do something else. You could still fit a considerable number of drives in something like this thanks to PCI/pci-e raid cards.