Asus P5MT-M User Guide - Page 101

5.1 Setting up RAID The motherboard comes with the following RAID solutions: P5MT model • LSI Logic Embedded SATA RAID technology embedded in the Intel® ICH7R Southbridge supports up to two SATA hard disk drives and RAID 0, RAID 1, and RAID 10 configurations. P5MT/SCSI model • LSI Logic Embedded SATA RAID • LSI53C1020A PCI-X SCSI controller supports SCSI hard disk drives and RAID 0, RAID 1, RAID 1-E configurations. 5.1.1 RAID definitions R A I D 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 1- E (Enhanced RAID 1) has a striped layout with each stripe unit having a secondary (or alternate) copy stored on a different disk. You can use three or more hard disk drives for this configuration. R A I D 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. J B O D (Spanning) stands for J u s t a B u n c h o f D i s k s 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. If you want to boot the system from a hard disk drive included in a created RAID set, copy first the RAID driver from the support CD to a floppy disk before you install an operating system to the selected hard disk drive. Refer to Chapter 6 for details. ASUS P5MT Series 5-1