RAID
(Redundant Array of Independent Disks)
JBOD-
“Just a Bunch of Disks”
RAID 0
“Striping” Data is written across multiple disk. Improves performance, with no fault tolerance.
RAID 1
“Mirroring” Data is written to a disk or volume and then copied to another disk or volume. Slows down performance slightly with fault tolerance. (up to one drive failure)
RAID 5
“Striping with Parity” Data is written to 3 or more disk with Parity. Improves performance over RAID 1 with fault tolerance. (up to one drive failure)
RAID 6
Striping with Parity” Data is written to 4 or more disk with additional Parity. Improves performance over RAID 1 with fault tolerance. (up to two drive failures)
RAID 10
“Mirror + Striping” Data is Mirrored over 2 or more disk and then striped to 2 or more disk. Great performance with fault tolerance.
