[ GLOSSARY DEFINITION ] Storage RAID 1 Mirroring drives for redundancy. Full Definition & Technical Explanation RAID 1 — Mirroring drives for redundancy.This storage term is part of the CompareTech technical dictionary and helps you read specifications, comparisons, and benchmark data across its device database.See also: RAID RAID 0. Related Technical Terms RAID Redundant Array of Independent Disks — combining drives for speed or safety. Storage RAID 0 Striping drives for speed with no redundancy. Storage ← All Glossary Terms How We Score → ← Previous Term Next Term →