The central UNIX systems are made up of hardware from several popular vendors. The farms run the UNIX operating system and are primarily used for long production analysis tasks, for example track reconstruction.
All systems communicate with the Internet for both internal and external data transfers.
Experiment systems typically consist of a UNIX host, with one or more UNIX and PC workstations, called workgroup clusters. The Computing Division also provides planning, systems, application software and consulting support for workgroup computing.