Combined RAIDs: RAID 10/50
Speed:
Combines multiple RAID 1 or RAID 5 sets by using RAID 0 “Striping” to gain
speed.
Protection:
There are two RAID 1 or 5 “Mirrored” sets used in order to tolerate 1-2
drives failing depending on which drives they are.
Capacity:
For RAID 10 its usable space is half of the combined capacity of all the
drives used, while for RAID 50 its usable space is each RAID5 capacity*RAID5
number.
RAID 1 “Mirror”
Speed:
No speed benefits gained.
Protection:
One drive can fail and all data will still be accessible.
Capacity:
One drive worth of usable space out of the two total drives used.
JBOD (Independent Drive Modes)
Speed:
No significant speed gains.
Protection:
No built-in data protection.
Capacity:
In JBOD mode, the capacities are combined. When set up as independent
drives, each drive presents its stated capacity for use.
