Asus LSISAS1064E Computer Hardware User Manual


 
2-2 Chapter 2: RAID conguration
2.1 Setting up RAID
The RAID card supports RAID 0, RAID 1 and RAID 1E set.
2.1.1 RAID denitions
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 conguration 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 1E
(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 conguration.
If you want to boot the system from a hard disk drive included in a created RAID
set, copy rst the RAID driver from the support CD to a oppy disk before you
install an operating system to the selected hard disk drive.
2.1.2 Installing hard disk drives
The RAID card supports SAS for RAID set conguration. For optimal performance,
install identical drives of the same model and capacity when creating a disk array.
To install the SAS hard disks for RAID conguration:
1. Install the SAS hard disks into the drive bays following the instructions in the
system user guide.
2. Connect a SAS signal cable to the signal connector at the back of each drive
and to the SAS connector on the motherboard.
3. Connect a power cable to the power connector on each drive.