DFTSNA:A Distributed Fault-Tolerant Shipboard System

This paper describes the architecture,fundamental principle and implementation of a distributed fault-tolerant system-DFTSNA,Its objective is o combine extreme reliability with high availability in a shipboard environment,Multi-level fault tolerance is considered and several special purpose hardware subsystems(F-T clusters)are developed.The physical and functional distribution of the system is empha-sized to meet the stringent shipboard requirements.A number of algorithms are produced to support fault-tolerant operation.