Shipped in September 1956, the first 5MB hard disk unit weighed over a ton (approximately 2,200 pounds) and was used in the IBM 305 RAMAC, the first commercial computer to feature a moving-head ...

Hard disks emerged in corporate datacenters in the late 1960s and began to flourish in the 1970s alongside tape drives, which were the primary storage medium at that time (see magnetic tape).

The first commercial hard disk drive was introduced in 1956 as part ... This groundbreaking drive offered 5MB of storage at $10,000 per MB. At the time, customers would pay over $3,200 per month ...