Asus P4C800 Deluxe - Manual (Page 131)

ASUS P4C800 Deluxe motherboard user guide 5-23
5.4 RAID configurations
The motherboard includes the Promise ® PDC20378 controller chipset to
support Redundant Array of Independent Disks (RAID) configurations.
Using two Serial ATA hard disks on SATA_RAID1/SATA_RAID2 interfaces,
and two ATA133 hard disks on the PRI_RAID interface, you may set up
RAID0, RAID1, RAID0+1, and Multi-RAID configurations. Use the
MBFastTrak378™ BIOS and the FastBuild™ utility to configure a disk
array.
RAID 0 (called 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.
RAID 1 (called 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.
RAID 0+1 is data striping and data mirroring combined without parity
(redundancy data) having to be calculated and written. The advantage of
RAID 0 + 1 is fast data access (like RAID 0), but with the ability to loose
one drive and have a complete duplicate surviving drive or set of drives
(like RAID 1).