Primary definition
The capability to switch over automatically (typically without human intervention or warning) to a redundant or standby information system upon the failure or abnormal termination of the previously active system. Source: NIST SP 800-53 Rev 4
Also known asautomatic failover · failover switching · redundant failover · system failover · high availability failover
3 sources cited4 related termsReviewed Aug 9, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
The capability to switch over automatically (typically without human intervention or warning) to a redundant or standby information system upon the failure or abnormal termination of the previously active system. Source: NIST SP 800-53 Rev 4
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Failover. In Election Security Glossary. Retrieved August 20, 2026, from https://electionsecurityglossary.com/glossary/failover
Sources
3 cited · last checked Aug 9, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
EAC Information Technology Terminology
EAC Information Technology Terminology
Multi-source
03
The Cyber Glossary
The Cyber Glossary
Multi-source
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