I've got an old PC with a 4790K in it that I wanted to utilize in a NAS server. However it has a full size case currently and I was hoping to find something smaller so that I can tuck it away somewhere a bit easier. Unfortunately most of what I am finding is either Micro ATX or some other form factor. I'd prefer not to buy any new parts besides HDDs so came here hoping I could get some recommendations. I only plan on having a max of 4 HDD's running in this thing as I don't have all that much data (though I wouldn't mind setting up a media server again).
But yeah, any options you all would recommend?
P.S. by Full ATX I mean Standard, not Extended
Unrelated, I can't decide over using FreeNAS/TrueNAS or Unraid... is it all just preference? Previously I would just run a Linux server and use Samba.