In 1956 the world's first hard drive was produced by IBM. The IBM system 305 hard drive consisted of twenty four fifty inch platters that were coated with iron oxide paint.
(Wright) Each platter had a recording surface on each side resulting in one hundred total recording surfaces. Each surface then had one hundred tracks for recording. The disk spun at 1200 RPMS, had a data transfer rate of 8800 bytes per second and a total capacity of five megabytes. …
