RAID
From Mac Guides
Short for Redundant Array of Independent (or Inexpensive) Disks, a RAID is a system of using multiple hard drives for sharing or replicating data among the drives.
Some RAID types:
- RAID 0
- RAID 1
- RAID 2
- RAID 3
- RAID 4
- RAID 5
- RAID 6
- RAID 10
- RAID 50
- RAID 0+1
A wonderfully done example of the various RAID levels can be found at ACNC's web site

