Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Redundancy refers to the duplication of critical components or information in a system to ensure reliability and fault tolerance. It involves having backup systems or data that can be used if the primary ones fail.
This term refers to a system's ability to continue functioning properly even when some of its components fail.
Backup: A backup is a copy of important data or files that can be used to restore them in case they are lost or damaged.
Redundant Array of Independent Disks (RAID): RAID is a technology that combines multiple disk drives into one logical unit for improved performance, reliability, and/or capacity.