The Redundant Array of Independent Disks (RAID) is a group of several disk drives that appears as a single disk in the OS.
RAID 0
RAID 0 is known as ‘striping’ and is optimized for performance and read/write speed, but has high failure, dependent on each drive.
RAID 1
RAID 1 is known as ‘mirroring’ and duplicates data across drives, increasing fault tolerance, but halving storage capacity.
RAID 5
RAID 5 is known as ‘striping with parity’ and requires at least three drives for maximum read speed and single drive failure, but reduced write speed.
RAID 6
RAID 6 is known as ‘striping with double parity’ and requires at least four drives for maximum read speed and two drives failure, but slower write speed.
RAID 10
RAID 10 is a combination of RAID 1 and RAID 0 for both striping and mirroring to maximize read/write speed and single disk failure, but only half the disk space is available for storage.