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)

Source

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).

Discussion

Also called design redundancy by Leveson (1995)

SEBoK v. 1.9.1, released 16 October 2018