ICL EDS-200 Disk Packs were used in the ICL 2900 Series was a range of mainframe computer systems announced by the UK manufacturer ICL on 9 October 1974. The company had started development, under the name "New Range" immediately on its formation in 1968. The range was not designed to be compatible with any previous machines produced by the company, or with any competitor's machines: rather, it was conceived as a synthetic option combining the best ideas available from a variety of sources.

In marketing terms, the 2900 Series was superseded by Series 39 in the mid-1980s; however, Series 39 was essentially a new set of machines implementing the 2900 Series architecture, as were subsequent ICL machines branded "Trimetra".

A bank of 5 EDS200 disk drives similar to ours  would hold 1GB of data

The 2980 was initially the most powerful of ICL's New Range mainframe computers. In addition to the OCPs, it consisted of a store multiple access controller (SMAC) and one or more store access controllers (SAC), a general peripheral controller (GPC), one or more disc file controllers (DFC) and a communications link controller (CLC), together with disc drives (a typical configuration would have eight EDS 200 drives), tape decks, an operating station (OPER), line printers and card readers. It supported the VME/B, VME/K and Edinburgh Multiple Access System (EMAS) operating systems. A typical 2980 configuration would cost about £2 million.

Our platters were kindly donated by Paul Churchley & Sally Buswell