A scaleable Fault Tolerant Computer (FTC) has been developed for guidance and control and for the data management of the International Space Station ISS and the Automated Transfer Vehicle ATV.

Up to now, the FTC has more than 75000 hours in continuous operation without any loss of required function.

The FTC is the first computer in space applications, using the proven “Byzantine algorithm” for the fault tolerance. This concept, a scaleable fault tolerant computer with commercial parts and the Byzantine algorithm, is the design goal of ifatos for fault tolerant computing. This concept is proven successfully by the scaleable Fault Tolerant Computer (FTC) in the International Space Station (ISS).