IBM manufactured this removable disk drive from 1962 for its computer systems. The device - nicknamed ‘washing machine’ due to its shape - could store 2 million characters on an IBM 1316 magnetic disk.

The device was also used in Hungary, first as a peripheral for the IBM 1440 installed in the KGM. There were two models available: a master drive, with the electronics for interfacing with the central unit and additional slave drives. The disk set consists of disks 36 cm in diameter, and weighs approx. 4.5 kg. Each of the ten disk surfaces is accessed through synchronous read/write heads, forming one hundred tracks on the disk. A track consists of twenty sectors, capable of storing 100 characters each. This gives the following disk capacity: 100char x 20sektor x 100track x 10side = 2 million char.

Because of the small capacity, it contains special instructions, e.g. scandisk for direct access of identifiers, track record for writing records of entire tracks instead of sectors.

The IBM 1311 was used in combination with the 7000 and 1400 series, its production ceased in 1971. His successor were the already byte-based 2302 and 2305 adapted to the system/360, followed by the long-lived 2311 with a capacity of 7,25 MB. This was the sample of the ES system model as well. The best of the IBM 360 system was the IBM 2314 with 30 MB capacity, that - because of its cabinets and drawers - picked up the nickname of ‘Pizza Oven’.