
Modules
Setting Up SATA RAID Mode 7 - 3
7
Prepare the following before setting up your serial ATA hard disks in
RAID
mode:
1.
The
Microsoft Windows 7 OS DVD
.
2.
A
second
(identical) hard disk installed in the Primary HDD bay.
OR
A
second
(identical) hard disk installed in the Primary HDD bay, and a
third
(identical) hard disk in the Secondary HDD bay if required.
3.
The
Device Drivers & Uti User’s Manual
disc.
RAID Level
Description
RAID 0
Identical drives reading and writing data in parallel to
increase performance
. RAID 0
implements a striped disk array and the data is broken into blocks and each block is
written to a separate disk drive.
RAID 1
Identical drives in a mirrored configuration used to
protect data
. Should a drive that is
part of a mirrored array fail, the mirrored drive (which contains identical data) will
handle all the data. When a new replacement drive is installed, data to the new drive is
rebuilt from the mirrored drive to restore fault tolerance.
RAID 5
Identical drives (at least
three
drives must be used) in a parity across disks
configuration are used to
protect data
and
increase performance
. A RAID 5 array
can withstand a single disk failure without losing access to data.
Recovery
Two Identical drives copying data between a master and a recovery disk. This provides
more control over how data is copied between the master and recovery drives, fast
volume updates and the ability to view the data in
Windows Explorer
.
Table 7 - 1
RAID Levels
Array Types
A
Mirrored Array
(
RAID 1
) provides full
data protection, as
data can simply be
copied from a healthy
disk to a replacement
for any failed disk.
A
Striped Array
(
RAID 0
) is
NOT
fault-
tolerant. The failure of
one drive will result in
the loss of all data in
the array. It is de-
signed to increase disk
performance by
spreading the I/O load
across the channels
and drives.
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