Asus RS100-E4/PI2 Manuel d'utilisateur Page 100

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6-2 Chap ter 6: RAID Configuration
6.1 RAID congurations
The server system/motherboard comes with the Intel
®
ICH7R and the
LSI Logic Embedded SATA RAID technology built-in the Intel
®
ICH7R
SouthBridge chipset that allows you to congure IDE and Serial ATA hard
disk drives as RAID sets. The motherboard supports the following RAID
congurations:
6.1.1 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
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.
Intel
®
Matrix Storage. The Intel
®
Matrix Storage technology supported by
the ICH7R chip allows you to create a RAID 0 and a RAID 1 set using only
two identical hard disk drives. The Intel
®
Matrix Storage technology creates
two partitions on each hard disk drive to create a virtual RAID 0 and RAID
1 sets. This technology also allows you to change the hard disk drive
partition size without losing any data.
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. Refer to section “6.1 RAID driver installation” for details.
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