User`s guide

9-76 Upgrading Your Server
USE OF INTERNAL HARD DISK DRIVES IN THE RAID SYSTEM
Using the RAID Controller allows you to use hard disk drives in the device bays of the server and those in the optional
expansion disk cabinet in the RAID System.
IMPORTANT:
 Adding hard disk drives in a RAID System or changing the RAID level initializes hard disk
drives. If the hard disk drive to be configured in the RAID System contains valuable data,
make sure to make a backup copy of the data to another hard disk drive before installing the
RAID Controller and configuring the RAID System.
 More than one hard disk drive is required to configure a Logical Drive.
 Use hard disk drives of the same capacity and performance (e.g., revolution) for each pack to
configure them in the RAID System.
NOTES:
 Choose a controller corresponding to the RAID levels and hard disk drives of your choice.
 A Logical Drive except for RAID0 increases disk reliability. However, the actually available
capacity becomes smaller than the total hard disk drive capacity in the Logical Drive.