A Data Handling Division report by Philipe Bloch states:
Around the CERN sites more than 150 computers of widely varying sizes are installed. They vary from small mini-computers (PDP8, HP2115A) via larger mini's and control computers (PDP11/45, HP4100, Nord-10, IBM1800, Modular One, Ferranti Argus 500) over medium sized computers such as PDP-10, IBM-360/44, CII 10070 and CDC 3200 to very large computers (CDC 6600, CDC 7600) in the Computer Centre itself. Many mini-computers are used by experimenters for data collection but accelerator control, remote batch stations and process control application use most of these. The medium sized computers are normally dedicated to particular types of processing for individual groups or divisions: measurements of bubble chamber pictures (CDC 3200, ERASME on the PDP-10), support for data collection for the OMEGA spectrometer and the Split Field Magent (CII 10070).
The Computer Centre is part of the Data Handling Division and provides a general purpose scientific computing service to both Laboratories... About 700-800 different users run approximately 15,000-20,000 jobs per week on the main computers and mount about 4000 tape reels from a total tape library of more than 6000 reels. Remote batch and terminal services as well as high-speed data links and a delivery service make computing easily accessible practically everywhere on the site round the clock.