User`s guide

Chapter 1
Raid 0 + 1
RAID 0 + 1 is achieved in a multidrive RAID set by the combination of striping
mirrored sets. RAID 0 + 1 provides data redundancy and is beneficial for any critical
high-availability application. If a drive fails in a RAID 0 + 1 array, you can continue
to use the array normally since data from its mirrored drive is automatically retrieved.
Raid 5
RAID 5 combines striping (writing data across the set of drives) and storing parity
across all drives. If a drive fails in a RAID 5 array, you can continue to use the array
normally since the array controller automatically regenerates the data from the failed
drive using data and parity blocks from other operational drives. All data remains
accessible even when one drive fails.
JBOD
JBOD is an acronym for "just a bunch of drives." This mode allows a disk drive to be
accessed independently similar to using a non-RAID SCSI disk controller. This mode
does not provide any data redundancy.
1-5