What is Network Redundancy?
Duplicate components or paths that keep a network running when part of it fails.
Definition
Network redundancy is the practice of building duplicate or alternative components and paths into a network so that the failure of any single element does not cause an outage. Examples include redundant internet links, dual power supplies, and multiple network paths between key points.
Redundancy is often paired with failover, which automatically activates the backup when the primary fails.
Why it matters
Redundancy is the core principle behind high availability. By removing single points of failure, it ensures that critical systems and services keep running even when hardware, links, or power fail.
Related terms
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