Guide To Raid Configurations (Raid 0 / Raid 1 / Jbod); Introduction Of Raid - ASROCK 775TWINS-HDTV Manual To Installation And Configuration

2. Guide to RAID Configurations (RAID 0 / RAID 1 / JBOD)

2.1

Introduction of RAID

This motherboard adopts ALi M5283 IDE controller chip that supports RAID 0 / RAID 1
/ JBOD function with two independent Serial ATA (SATA) channels. This section will
introduce the basic knowledge 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 access 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.
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 management
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.
WARNING!!
Although RAID 0 function can improve the access
performance, it does not provide any fault
tolerance.
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