Guide To Raid Configurations (Raid 0 / Raid 1 / Jbod); Introduction Of Raid - ASROCK 939S56-M Installation And Configuration Manual

Sata hard disks and raid

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2 . Guide to RAID Configurations

(RAID 0 / RAID 1 / JBOD)

This motherboard adopts SiS 964 south bridge chipset that integrates RAID

controller supporting RAID 0 / RAID 1 / JBOD function with two independent

Serial ATA (SATA) channels. This section will introduce the basic knowl-

edge of RAID, and the guide to configure RAID 0, RAID 1, and JBOD settings.

RAID

The term "RAID" stands for "Redundant Array of Independent Disks", which

is a method combining two or more hard disk drives into one logical unit. For

optimal performance, please install identical drives of the same model and

capacity when creating a RAID set.

RAID 0 (Data Striping)

RAID 0 is called data striping that optimizes two identical hard disk drives to

read and write data in parallel, interleaved stacks. It will improve data ac-

cess and storage since it will double the data transfer rate of a single disk

alone while the two hard disks perform the same work as a single drive but

at a sustained data transfer rate.

WARNING!!

Although RAID 0 function can improve the access performance,

it does not provide any fault tolerance. Hot-Plug any HDDs of the

RAID 0 Disk will cause data damage or data loss.

RAID 1 (Data Mirroring)

RAID 1 is called data mirroring that copies and maintains an identical image

of data from one drive to a second drive. It provides data protection and

increases fault tolerance to the entire system since the disk array manage-

ment software will direct all applications to the surviving drive as it contains

a complete copy of the data in the other drive if one drive fails.

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