g
Operating Instruction
15
o Press F4 to resolve confl icts:
Use this option to perform any repairs that
might be needed due to the replacement of a
hard drive within an array.
Boot options:
In order to be able to boot from devices con-
nected to the UDMA/ATA133 RAID controller
card, you must fi rst set the
„boot sequence“
in the BIOS to
„SCSI“
, since this controller
is treated as a
SCSI controller
. If your BIOS
does not have this option (as is often the
case with older PCs), it may be possible to
solve this problem by updating your BIOS.
Consult your retailer or motherboard manuf-
acturer for further details. If you want to boot
from devices connected to the on-board IDE
interface, you can use the settings already
confi gured.
Connecting devices:
Unlike with 40-pin Ultra DMA/33 fl at ribbon
cables, a certain sequence must be followed
when connecting devices using 80-pin Ultra
DMA66/100/133 connection cables: The
blue connector must be connected with the
interface on the controller card. The black
connector must be connected with the fi rst
or „master“ device. If you want to connect a
second device, it must be connected with the
grey connector and defi ned as the „slave“.
The same sequence also applies to the
second interface on the card. Always make
sure that the red side of the connection cable
is connected to the side of the controller or
device that is marked with an arrow. You will
also fi nd two contact pins on the controller
card labelled „JP2“. Here you can connect
the connector for the „HDDLED“. It indicates
write and read accesses on the connected
devices.
INFO:
With some hard drives, the jumper
may have to be set to „Slave present“.
A short briefi ng on the concept of a RAID
controller and how it works:
• ARRAY: An ARRAY is a term for the array
of 2 or more hard drives in a PC.
• RAID: A RAID (old: Redundant Array of
Inexpensive Disks, or new: Redundant
Array of Independent Disks) is a term for
a consolidation of 2 or more hard drives.
This group of drives is then addressed as
one hard drive. By combining drives,
performance can theoretically be doubled,
and data can be backed up
automatically. These concepts are known
as RAID 0 (striping = dividing the data onto
different hard drives) and RAID 1
(mirroring = making identical copies as a
backup).
• RAID 0 (or striping: data division): The data
is divided equally among the hard drives,
thus increasing the transfer performance
signifi cantly. For the user, this high data
throughput is particularly noticeable with
very large fi les (e.g. videos).
• RAID 1 (or mirroring: identical copy): In
this case, the data is copied from the
primary drive to a secondary drive.
All information is therefore contained on
both drives (hard drives). If one hard drive
fails (due to a technical defect), the RAID
controller automatically switches to the
intact hard drive. The UDMA/ATA133 RAID
controller allows damaged hard drives to
be replaced quickly by adding a new one
to the array. While this does not affect the
write performance, both hard drives
can be read simultaneously. Mirroring
thus doubles the read performance of a
drive.
00049253bda.indd Abs1:15
00049253bda.indd Abs1:15
30.07.2007 10:53:52 Uhr
30.07.2007 10:53:52 Uhr
