Updated: 10/17/2017 by Computer Hope

Redundancy may refer to any of the following:

lady lining up cup showing redundancy

1. Redundancy is the duplication or mirroring of a device or data that helps prevent from becoming lost or a device from becoming unavailable. For example, a RAID setup may allow a computer to not fail or lose data if a hard drive was to become unavailable.

2. In general, redundant refers to anything that is duplicated.

Hardware terms, RAID, Redundant power supply