IBM introduces the 3480 cartridge tape system
22nd March 1984
Since the early 1950s, magnetic tape was the industry standard for inexpensive mass storage of information.
Previously, tapes were wound onto large reels, usually 10.5-inch in diameter. Each reel held 160MB of data and could be accessed at a rate of 1.25MB per second. IBM's new cartridges held more data (200MB), were faster (3MB per second), and took up less space.