Areca ARC-5030 Series, Руководство пользователя

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INTRODUCTION
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high performance and fault tolerance. The SATA RAID controller
implements several levels of the Berkeley RAID technology. An
appropriate RAID level is selected when the volume sets are
defined or created. This decision should be based on the desired
disk capacity, data availability (fault tolerance or redundancy),
and disk performance. The following section discusses the RAID
levels supported by the SATA RAID controller.
The SATA RAID controller makes the RAID implementation and
the disks’ physical configuration transparent to the host operating
stem. This means that the host operating system drivers and
software utilities are not affected, regardless of the RAID level
selected. Correct installation of the disk array and the controller
requires a proper understanding of RAID technology and the
concepts.
1.7.1 RAID 0
RAID 0, also referred to as striping, writes stripes 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; the reliability of RAID Level 0 is less because the
entire array will fail if any one disk drive fails, due to a lack of
redundancy.