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Chapter 5: Software supportChapter 5: Software support
Chapter 5: Software supportChapter 5: Software support
Chapter 5: Software support
5.4 RAID configurations
The motherboard comes with a RAID controller integrated in the ULI M1575
Southbridge that allows you to configure Serial ATA hard disk drives as
RAID sets. The motherboard supports the following RAID configurations.
RAID 0RAID 0
RAID 0RAID 0
RAID 0
(Data striping)
optimizes two identical hard disk drives to read and
write data in parallel, interleaved stacks. Two hard disks perform the same
work as a single drive but at a sustained data transfer rate, double that of
a single disk alone, thus improving data access and storage. Use of two
new identical hard disk drives is required for this setup.
RAID 1RAID 1
RAID 1RAID 1
RAID 1
(Data mirroring)
copies and maintains an identical image of data
from one drive to a second drive. If one drive fails, the disk array
management software directs all applications to the surviving drive as it
contains a complete copy of the data in the other drive. This RAID
configuration provides data protection and increases fault tolerance to the
entire system. Use two new drives or use an existing drive and a new drive
for this setup. The new drive must be of the same size or larger than the
existing drive.
RAID 0+1RAID 0+1
RAID 0+1RAID 0+1
RAID 0+1 is
data striping
and
data mirroring
combined without parity
(redundancy data) having to be calculated and written. With the RAID 0+1
configuration you get all the benefits of both RAID 0 and RAID 1
configurations. Use four new hard disk drives or use an existing drive and
three new drives for this setup.
RAID 5RAID 5
RAID 5RAID 5
RAID 5 stripes both data and parity information across three or more hard
disk drives. Among the advantages of RAID 5 configuration include better
HDD performance, fault tolerance, and higher storage capacity. The RAID 5
configuration is best suited for transaction processing, relational database
applications, enterprise resource planning, and other business systems.
Use a minimum of three identical hard disk drives for this setup.
JBODJBOD
JBODJBOD
JBOD
(Spanning)
stands for
Just a Bunch of DisksJust a Bunch of Disks
Just a Bunch of DisksJust a Bunch of Disks
Just a Bunch of Disks and refers to hard
disk drives that are not yet configured as a RAID set. This configuration
stores the same data redundantly on multiple disks that appear as a single
disk on the operating system. Spanning does not deliver any advantage
over using separate disks independently and does not provide fault
tolerance or other RAID performance benefits.