Installation guide

Software Operation Manual

1.2.1 RAID 0

RAID 0, also referred to as striping, writes stripping of data across multiple disk

drives instead of just one disk drive. RAID 0 does not provide any data

redundancy, but does offer the best high-speed data throughput. RAID 0 breaks

up data into smaller blocks and then writes a block to each drive in the array.

Disk striping enhances performance because multiple drives are accessed

simultaneously; but the reliability of RAID Level 0 is less than any of its member

disk drives due to its lack of redundancy.

1.2.2 RAID 1

RAID 1 also known as “disk mirroring”, data written to one disk drive is

simultaneously written to another disk drive. Read performance may be

enhanced if the array controller can parallel accesses both members of a

mirrored pair. During writes, there will be a minor performance penalty when

compared to writing to a single disk. If one drive fails, all data (and software

applications) are preserved on the other drive. RAID 1 offers extremely high

data reliability, but at the cost is doubling the required data storage capacity.