Comment If no NAS, you can DIY one out of an old PC (Score 1) 393
While trying to scrounge up the funds for a super sexy NAS, I took an old G4 Mac I got on Ebay and followed some directions to throw in some extra drives. There are plenty of 'diy' NAS instructions on the net to take advantage of old PCs that you might have floating around.
I actually ran CAT5 to my detached garage. I think whatever your solution is (box, NAS, diy NAS) you should consider storing it 'off site' from your main house to ensure survivability if there is some fire or other disaster.