http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2006/09/11/BUGH3L23T01.DTLThe first hard drive (RAMAC) delivered on Sept. 13, 1956 weighed 2,140 lbs and stored 5 megabytes of data.
In 1956, the RAMAC cost $50,000, or $10,000 per MB. Today, a GB of storage on a 3.5-inch hard drive can cost less than 50 cents...
...According to Hitachi's Healy, the RAMAC weighed a ton, was the size of a double refrigerator, and relied on 50 spinning platters. It cost $50,000, and held 5 MB of information -- roughly the equivalent of one song on a modern iPod.
http://www.cio.com/blog_view.html?CID=24745"The hard disk! How many technologies ever last 50 years?" said Steve Wozniak, cofounder of Apple Computer, whose hometown of San Jose, Calif., is also the hometown of the disk drive. "Its an amazing invention that changed the world."