It’s amazing how much storage you can get for so little these days. As of this writing, a 4TB internal hard drive retails for about $250. So, right now you can buy 100TB raw storage for under $7,000. Pick out a nice drive enclosure with RAID controllers and external connectivity like fibre channel or SAS and voila, you have direct attached storage (DAS).
Now, for your next trick, make that into a SAN.