HighPoint RocketRAID mini-SAS 6G HBA Series Руководство по установке - Страница 2
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Печатать страницуPart 1 – What is a Data RAID?
A Data RAID is setting up a RAID array (0, 1, 5,6, 10,50 or JBOD) on the RocketRAID
mini-SAS 6G series controller.
RAID arrays offers advantages of performance and protection with redundancy.
RAID Basics?
RAID stands for Redundant Array of Independent Drives. This means taking
multiple matching drives and arranging them together to achieve large storage
space, speed, data protection, or any combination of the three. The RocketRAID
mini-SAS 6G 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.