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ASUS P5W DH Deluxe 5-29
5.4 RAID congurations
The motherboard comes with four Serial ATA RAID solutions:
• ASUS EZ-Backup. Enabled by Silicon Image’s SiI4723 controller, ASUS
EZ-Backup provides ready-to-go hardware RAID for plug-and play RAID 1 and
easy-to-congure RAID 0 sets of two hard disk drives
• Intel
®
ICH7R Southbridge RAID provides RAID level 5 support for three or
more hard disk drives.
• Cross-RAID allows you to build a RAID 10 set through a cross-conguration of
ASUS EZ-Backup and Intel
®
ICH7R.
• JMicron
®
RAID. Enabled by JMicron
®
JMB363 controller, JMicron
®
RAID
extends the advantages of software RAID beyond internal hard disk drives to
an external disk or external, port-multiplier enabled enclosure
While individually the RAID implementations offer advantages for specic
applications, as a whole, this set of tools provides ultimate exibility for every
environment.
Refer to the following RAID denitions for details.
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 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 conguration 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 5 stripes both data and parity information across three or more hard
disk drives. Among the advantages of RAID 5 conguration include better
HDD performance, fault tolerance, and higher storage capacity. The RAID
5 conguration 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.
RAID 10* is data striping and data mirroring combined without parity (redundancy
data) having to be calculated and written. With the RAID 10* conguration you get
all the benets of both RAID 0 and RAID 1 congurations. Use four new hard disk
drives or use an existing drive and three new drives for this setup.
*To build a RAID 10 set, you need to cross-congure Intel
®
ICH7R with Silicon
Image
®
, which controls the EZ_RAID connectors for the EZ Backup feature. See
section “5.4.5 Cross-RAID conguration” for details.