Physical redundancy (glossary)

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a system resilience principle that states that the system should possess two or more independent and identical legs to perform critical tasks. Jackson (2016)


Jackson, Scott. 2016. "Principles for Resilient Design - A Guide for Understanding and Implementation." In IRGC Rresource Guide on Resilience, edited by I. Linkov. University of Lausanne, Switzerland: International Risk Governance Council (IRGC).


Also called design redundancy by Leveson (1995)

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