IBM 350 (First Hard Drive)

One ton of machinery for 5 megabytes/Computing

The IBM 350 Disk Storage Unit, introduced in 1956, was the first commercial hard drive. It stored 5 million characters (about 3.75 MB) on fifty 24-inch spinning platters and weighed over a ton. It was delivered by cargo airplane and rented for $3,200 per month, which in today's money makes cloud storage look like a bargain.