Redundancy

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Definitions

Other International Definitions

IAEA

Redundancy: Provision of alternative (identical or diverse) structures, systems and components, so that any one can perform the required function regardless of the state of operation or failure of any other. [1]

National Definitions

Egypt

Redundancy: In the transmission of data, the excess of transmitted message symbols over that required to convey the essential information in a noise-free circuit. [2]
Note: Redundancy may be introduced intentionally (as in the case of error detection or correction codes) or inadvertently (such as by oversampling a band-limited signal, inefficient formats, etc.).

In a communication system, surplus capability usually provided to improve the reliability and quality of service. [2]


Guatemala

Redundancia: Capacidad de un sistema de comunicaciones para detectar un fallo en la red de la manera más rápida posible y que a la vez, sea capaz de recuperarse del problema de forma eficiente y efectiva. [3]



Italy

Ridondanza: Caratteristica della catena di protezione principale che discende dalla presenza di opportune duplicazioni degli elementi della catena stessa, di modo che, ipotizzando malfunzionante un qualunque elemento della catena, questa assicuri ancora l’eliminazione del guasto con degrado di selettività e rapidità prestabilito. [4]


United States

DHS
Redundancy: additional or alternative systems, sub-systems, assets, or processes that maintain a degree of overall functionality in case of loss or failure of another system, sub-system, asset, or process. [5]

See also

Notes

  1. IAEA Nuclear Energy Series No. NP-T-3.12
  2. 2.0 2.1 Glossary of the National Telecom Authority (NTA), Egypt
  3. La Estrategia Nacional de Seguridad Cibernética (June 2018)
  4. Glossary Italian power operator Terna
  5. DHS Risk Lexicon 2010 Edition, September 2010