The computer core is the area on a starship in which the central computer resides. It is designed so that technicians can easily access and replace failed parts (as rare as that is) and perform upgrades and diagnostics. This is accomplished through specialized bays, usually called computer access rooms. Cores also have several monitoring stations, manned by both Operations personnel and Computer Systems Specialists. Each computer core is extremely powerful, and has plenty of redundancy built in. Normally cores can be several decks high. Due to the dependance on the core of the ship, most vessels are designed with 2 cores (Intrepid & Sovereign Classes), although there are exceptions. Note: The Galaxy class has three computer cores.