The STAR-Guardian Network for the Protection of Long-Life Cyber-Physical Systems

The first processor to detect errors and to initiate recovery of a computing system was the TARP (Test-And-Repair-Processor) of the JPL-STAR (Self-Testing-And-Repairing) computer. The STAR-Guardian (SG) is a successor of the TARP. The SG is a network of Guard processors that provides fault tolerance services to closed cyber-physical systems with long life requirements, called Clients. The architecture of the SG is summarized and the properties of the SG that offer advantages in the protection of Clients are identified.