RAID Levels Explained for Business Storage

RAID combines multiple drives for redundancy, performance, or both. Choosing the right level protects your data without wasting capacity.

Common levels

RAID 1 mirrors two drives — simple redundancy. RAID 5 stripes with parity, surviving one drive failure with good capacity. RAID 6 survives two failures. RAID 10 combines mirroring and striping for top performance and resilience.

Choosing a level

Balance how much capacity you'll lose to redundancy, how many failures you must survive, and your performance needs. RAID is not a backup — it protects against drive failure, not deletion or disaster.

Get it right

Al-Gazelle supplies enterprise drives and controllers and helps design storage with the right RAID for your workload.