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A Reliability Model for Gracefully Degrading and Standby-Sparing Systems

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2 Author(s)
Borgerson, B.R. ; Sperry Research Center ; Freitas, R.F.

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.

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Computers, IEEE Transactions on  (Volume:C-24 ,  Issue: 5 )