Commercial history of hard disk drives began with the IBM Model 350 disk storage with fifty 24" disks and a capacity of 5MBs in 1956. Their capacity has grown exponentially over time - that means 10 times capacity increase in each 5 years.
Today 1,000,000,000,000 bytes of capacity is provided by the world's first Terabyte Hard Drive: The Hitachi Deskstar 7K1000 with five 3.5" platters. At the suggested retail price of $399 it offers an impressive $0.39/gig ratio!
It is finally possible to store all of our favorite images, music and movies on one hard drive.
