IBM drum storage
= IBM drum storage
{wiki=IBM_drum_storage}
IBM drum storage, often referred to as magnetic drum storage, is an early form of computer data storage that was popular in the mid-20th century. It was used primarily in the 1950s and 1960s as a way to store and retrieve data in a method similar to that of magnetic tapes and disks. The drum itself is a cylindrical device coated with a ferromagnetic material that can hold data.