Guide To Raid Configurations; Introduction Of Raid - ASROCK Fatal1ty Z77 Professional Installation And Configuration Manual

2. Guide to RAID Configurations

2.1 Introduction of RAID

This motherboard adopts Intel southbridge chipset that inte-
grates RAID controller supporting RAID 0 / RAID 1/ Intel Rapid
Storage / RAID 10 / RAID 5 function with four independent Se-
rial ATA (SATA) channels. This section will introduce the basic
knowledge of RAID, and the guide to configure RAID 0 / RAID
1/ Intel Rapid Storage / RAID 10 / RAID 5 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.
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 pro-
vides 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.
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