Abstract :
The basic concepts of fault-tolerant computing are reviewed, focusing on hardware. Failures, faults, and errors in digital systems are examined, and measures of dependability, which dictate and evaluate fault-tolerance strategies for different classes of applications, are defined. The elements of fault-tolerance strategies are identified, and various strategies are reviewed. They are: error detection, masking, and correction; error detection and correction codes; self-checking logic; module replication for error detection and masking; protocol and timing checks; fault containment; reconfiguration and repair; and system recovery.<>
Keywords :
fault tolerant computing; correction; digital systems; error detection; errors; fault containment; fault-tolerant computing; hardware; masking; module replication; protocol; reconfiguration; repair; self-checking logic; system recovery; timing checks; Digital systems; Error correction codes; Fault detection; Fault diagnosis; Fault tolerance; Fault tolerant systems; Hardware; Protocols; Reconfigurable logic; Timing;
