Adaptec ASC39320A-ROHS-KIT Guia do Utilizador descarregar pdf (Página 27)

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Introduction

Supported RAID Levels

HostRAID includes a BIOS Configuration Utility for boosting disk

performance and data protection. Adaptec SCSI Card supports the

following RAID levels:

■ RAID 0, Striping—Two or more drives that can read and write

data in parallel. Offers higher performance than a single drive,

but no fault tolerance. RAID 0 arrays do not store redundant

data; if any disk in the array fails, all data is lost.

■ RAID 1, Mirroring—Data is mirrored on one pair of disks

providing 100 percent redundancy. Offers complete fault

tolerance. If one disk fails, data is still available. Increases read

performance through load balancing. Adaptec recommends

using the same size disks, but if you use a disk with less disk

space, the actual data capacity of the array equals the smaller

capacity disk.

■ RAID 10, Mirrored Striping—It is a striped array whose

members are mirrored arrays. RAID 10 provides both high

performance and fault tolerance.

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Adaptec ASC39320A-ROHS-KIT Guia do Utilizador Página 27