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Hardware Redundancy

Chapter

Abstract

Hardware redundancy is achieved by providing two or more physical copies of a hardware component. When other techniques, such as use of more reliable components, manufacturing quality control, test, design simplification, etc., have been exhausted, hardware redundancy may be the only way to improve the dependability of a system. However, hardware redundancy brings a number of penalties: increase in weight, size, power consumption, cost, as well as time to design, fabricate, and test. Therefore, a number of choices have to be examined to determine the best way to incorporate redundancy into a system. In this chapter, we present common hardware redundancy configurations and evaluate their effect on system dependability.

Keywords

Module Fault Repair Rate Standby Mode Triple Modular Redundancy Redundant Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.KTH Royal Institute of TechnologyKristaSweden

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