Redundancy
What is Redundancy?
The duplication of critical components or functions of a system with the intention of increasing reliability. In security, redundancy ensures that the failure of one component does not result in a complete system failure.
Terms that appear alongside redundancy
Each of these is named in at least one of the same controls as redundancy. The number is how many controls name both.
- availability 9 shared controls
- nist 7 shared controls
- iso 22301 5 shared controls
- business continuity 5 shared controls
- resilience 5 shared controls
- impact analysis 5 shared controls
- access control 4 shared controls
- disaster recovery 4 shared controls
Frameworks that govern redundancy
What the standards actually require on redundancy
Requirements naming redundancy across 6 standards, quoted from the control text.
Redundancy pay comes from the NES (ss 119 to 123). Redundancy entitlements under clause 31 are calculated using the weekly all-purpose rate, and an employee receives a pro rata payment for any part year of continuous service at each of the year levels.
australia-electrical-electronic-and-communications-contracting-award-2020-ma000025::31.1 · 31.1 and 31.2 Calculate redundancy entitlements on the all-purpose weekly rate with pro rata years →A subsystem with fault tolerance above zero may be built on one semiconductor substrate (digital ICs only) only if the listed conditions are all met;
iec-61508-2010-functional-safety-of-e-e-pe-safety-related-systems::2-E · Part 2, Annex E (normative) Special architecture requirements for ICs with on-chip redundancy →An employee under notice of termination under clause 34 may leave during the notice period and remains entitled to clause 34 benefits as if they had stayed until the notice expired, but is not entitled to payment in lieu of the remaining notice.
australia-plumbing-and-fire-sprinklers-award-2020-ma000036::34.5 · 34.5 Employee leaving during redundancy notice keeps redundancy pay →Security Dimension 7 Availability per X.805 Clause 6.7: Availability means that events affecting the network do not stop authorized users from reaching the services, applications, information flows, stored information and network elements they are entitled to....
X805-Dim7-Availability-Network-Resources-Information-Authorized-Access-No-Service-Denial · ITU-T X.805 Security Dimension 7 - Availability + Network Resources + Information Accessible to Authorized Users + Denial-of-Service Prevention + Resilience + Redundancy + Disaster Recovery + Business Continuity + DDoS Mitigation →The organization should plan redundancy in equipment and infrastructure for critical ICT services, determining where duplicated hardware, network paths, power and environmental services, sites and cloud availability zones are needed to meet the objectives, how...
iso-iec-27031-2025::8.1.6 · Equipment redundancy planning →Information processing facilities are to be built with enough redundancy to satisfy availability requirements. Purpose: keep processing facilities operating without interruption.
iso-27002-2022::8.14 · Redundancy of information processing facilities →Questions people ask about redundancy
What is Redundancy?
Why is Redundancy important for compliance?
Which compliance frameworks address Redundancy?
Where can I learn more about Redundancy?
See how Redundancy applies across compliance frameworks
Our platform maps 1,016 frameworks with 316K cross-framework control mappings. Explore how this concept is addressed across standards.