English, Pictures The First Hard Disk Ever: 1 Metric Ton for 3.75 Megabytes November 2, 2016 Christian Anderle Leave a comment The first hard disk drive ever, the IBM 350 disk storage unit, was developed by IBM in 1956, stored 5 million 6-bit characters (3.75 MB) and weighed one metric ton. Share this: Click to print (Opens in new window) Print Click to email a link to a friend (Opens in new window) Email TweetMorePocket Click to share on Reddit (Opens in new window) Reddit Click to share on Telegram (Opens in new window) Telegram Share on Tumblr Click to share on WhatsApp (Opens in new window) WhatsApp