Asus Z7S WS - Manual (Page 131)

ASUS Z7S WS 5-23
5.4 RAID configurations
The motherboard comes with two RAID controllers that allow you to configure
Serial ATA hard disk drives as RAID sets.
• The
Intel ® .ESB2E.Southbridge RAID includes a high performance SATA
RAID controller that supports RAID 0, 1, and 5 for six independent Serial ATA
channels.
• The JMicron ® .JMB363.RAID.includes a high performance SATA RAID
controller that supports RAID 0, 1, and JBOD for two external Serial ATA
channels.
5.4.1 RAID definitions
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 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.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.
JBOD.
(Spanning) stands for 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.
Intel
® .Matrix.Storage. The Intel ® Matrix Storage technology supported by the
ESB2E chip allows you to create a RAID 0, RAID 1, and RAID 5 function to
improve both system performance and data safety. You can also combine two
RAID sets to get higher performance, capacity, or fault tolerance provided by the
difference RAID function. For example, RAID 0 and RAID 1 set can be created by
using only two identical hard disk drives.