Bull NovaScale T860 E1, User Manual

Page: 91 / 370

4-23
Configuration using the Internal RAID Controller
This section describes how to use the internal hard disk drives as a RAID System using the Internal RAID Controller.
Rebuild
If a HDD is defective, the rebuild feature can recover the data in the defective HDD. The rebuild can be applied to
redundant virtual disks in the RAID1, RAID5, or RAID6 level.
Manual Rebuild
The manual rebuild can be performed by using Universal RAID Utility, the management utility of the Internal RAID
Controller. Select a HDD and start the rebuild manually.
For the detailed operation, refer to the "Universal RAID Utility User's Guide" in the EXPRESSBUILDER DVD
included with the server.
Auto Rebuild
The Onboard RAID Controller (MegaRAID ROMB) can automatically start the rebuild. The auto rebuild can be of two
types, as follows:
„ Standby rebuild
Automatic rebuild by using hot-spares. In a configuration including hot-spares, the rebuild is performed
automatically if a HDD assigned to a virtual disk is defective.
„
Hot-swap rebuild
Automatic rebuild by hot-swapping defective HDD.
IMPORTANT:
Note the following for the rebuild:
„ The HDD used for rebuild should have the same capacity, rotation speed, and standard
as the defective HDD.
„ During rebuild, the processing rate is decreased due to the high load.
„
During rebuild, do not shutdown or reboot the server. If the server is shutdown by an
unforeseen accident such as power interruption, turn on the power again as soon as
possible. The rebuild restarts automatically.
„
The interval between the removal of the defective HDD and the installation of a
substitute HDD should be at least 60 seconds.
„
If the hot-swap rebuild does not function, perform a manual rebuild.