## Analysis and testing of the SURE programNational Aeronautics and Space Administration, Scientific and Technical Information Division, 1988 - Computers - 78 pages |

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### Contents

Introduction | 1 |

Comparison of SURE With Analytic SolutionsPhase I | 7 |

Concluding Remarks | 17 |

15 other sections not shown

### Common terms and phrases

Analytic solutions SURE ARIES Comparison Among SURE Comparison of SURE critical-triple faults D2 Di D2 D3(T Db(T Total Db(T Total D3(T Death state SURE Death states Analytic death-state probabilities define the death-state define the statistics defined as follows Di(T D2(T Di(T distribution H DS(T Dz(T Example 12 example 4a exponential distribution exponential transitions failure rate fault-recovery rate fault-tolerant computer systems fault-tolerant systems following equations define H in example impulse distribution impulse transitions Langley Research Center matrix exponential model with exponential needed to describe off-path transitions Parameters Death Parameters state SURE path step processors rate is given recovery rate recovery transition relative error reliability analysis tools semi-Markov processes Solutions for Example solutions SURE bounds statistics needed SURE bounds PAWS SURE bounds RD SURE program SURE With Analytic SURE's table for example Three-state model three-state semi-Markov model Total D3(T Db(T Total Total Total transient faults transition H uniform transitions unreliability estimate