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A Reliability Model for Gracefully Degrading and Standby-Sparing Systems
May 1975 (vol. 24 no. 5)
pp. 517-525
B.R. Borgerson, Sperry Research Center
A model for analyzing the reliability of gracefully degrading and standby-sparing computer systems is developed. The basis of the model is the identification of four distinct causes of crashes: time-domain multiple faults, resource exhaustion, space-domain multiple faults, and solitary faults. Expressions are developed for each of these crash-causing mechanisms and for their interrelationship. The model is then demonstrated by using it to analyze the reliability of a gracefully degrading computer system called PRIME.
Index Terms:
Fault tolerance, gracefully degrading, PRIME, reliability, resource exhaustion, solitary faults, space-domain multiple faults, standby sparing, time-domain multiple faults.
B.R. Borgerson, R.F. Freitas, "A Reliability Model for Gracefully Degrading and Standby-Sparing Systems," IEEE Transactions on Computers, vol. 24, no. 5, pp. 517-525, May 1975, doi:10.1109/T-C.1975.224255
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