My friend's shop across town has a platter from an old hard disk mounted on his wall from the early 1960s. It measures about 40" across and has a capacity of about 3.75MB or so. He told me the name of the computer it came from, but I don't recall at the moment.
The first 1 gigabyte drive was introduced sometime around 1980, it was the size of a refrigerator, and weighed over 500 lbs. Considering you can purchase drives now that hold 1,000 times that, measure less than 3.5", and weigh only a few pounds, I wouldn't be surprised if in the next 10 years we go beyond petabytes and exabytes.
