Shipped in September 1956, the first 5MB hard disk unit weighed over a ton (2,000 pounds) and was used by the IBM 305 RAMAC, which was the first commercial computer to have a moving-head hard disk.

1980 - Seagate introduced a competing drive to IBM. By this point, the 5MB had shrunk in size to just a 5.25-inch hard disk. It cost $4,300 (in today's dollars). 1983 - Rodime released the first 3 ...

This groundbreaking drive offered 5MB of storage at $10,000 per MB. At the time, customers would pay over $3,200 per month to access and store information, as IBM leased its systems instead of ...