Seagate announced a while ago that they would use heat-assisted recording technology once perpendicular recording reached it's limits. And as development of heat-assisted recording technology continues, Seagate has discovered that they can store much more data on a drive than they initially thought. Seagate claims that they can stick 50 terabytes in a square inch of data, meaning a standard 3.5" drive can hold a whopping 300 terabytes of data. That's equivalent to 6,144 50GB Blu-ray disks, the entire PlayStation 1, 2, and 3 library with room to spare, or the Library of Congress.