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space, speed, data protection, or any combination of the three. The RocketRAID 3G
mini‐SAS series controller supports the following RAID types:
RAID 0 "Stripe"
Speed: Data is alternated across two or more drives to gain speed by essentially
distributing the workload.
Protection: No built‐in protection.
Capacity: Usable space is the combined capacity of all the drives.
RAID 5 "Stripe & Protection"
Speed: Data is striped like in a RAID 0, so significant speed gains are seen.
Protection: Utilizes mathematical parity to achieve data protection while taking up
a minimum of space. One drive can fail and all data will still be accessible.
Capacity: All but one drive worth of capacity is usable. Minimum three drives are
needed to create a RAID 5 array. In a three drive RAID 5 array, there is two drives
worth of usable space.
RAID 6 "Enhanced RAID5"
Speed: Data is striped like in a RAID 0, so significant speed gains are seen.
Protection: Utilizes mathematical parity to achieve data protection while taking up
a minimum of space. Two drives can fail and all data will still be accessible.
Capacity: All but two drives worth of capacity is usable. Minimum four drives are
needed to create a RAID 6 array. In a four drives RAID 6 array, there is two drives
worth of usable space.
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.
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