RAID 6 | Striping with Double Distributed Parity

RAID Level 6

RAID Level 6 - (4 Drive Minimum - Redundancy Through Parity) Block-Level Striping with Double Distributed Parity:  Very similar to RAID 5, RAID 6 builds on the security of RAID 5 by adding an additional level of redundancy.  In a RAID 6 up to two drives can fail and no data will be lost.  RAID 6 makes very large arrays possible, where the time it takes to rebuild the array after a drive failure can be quite lengthy.  In a RAID 5 scenario data would be vulnerable for far too long while the rebuild is in progress.  RAID 6 addresses this concern by adding an additional redundancy drive.  RAID 6 is the solution that should be used where data is extremely critical or high system availability is important.