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4-26 Configuring Your Server
Configuration by Internal RAID Controller
This section describes how to use the internal hard disk drives as RAID System by Internal RAID Controller.
Rebuild
If a HDD is defected, the rebuild feature can recover the data in the defected 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 ExpressBuilder DVD that comes with
the server.
Auto Rebuild
The Internal RAID Controller can automatically start the rebuild without use of any utility such as Universal RAID Utility.
The auto rebuild includes two types as follows:
„
Standby rebuild
Automatic rebuild by using hot-spares. In the configuration including hot-spares, the rebuild is performed
automatically if a HDD assigned to a virtual disk is defected.
„
Hot-swap rebuild
Automatic rebuild by hot-swapping defected HDD.
IMPORTANT: Note the following for the rebuild:
„
The HDD used for rebuild should have the same capacity, rotation speed, and standard as the
defected HDD.
„
During rebuild, the processing rate is decreased due to much 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 is automatically restarted.
„
The interval from the removal of the defected HDD to the installation of a substitute HDD
should be 60 sec or longer.
„
If the hot-swap rebuild does not operate, perform the manual rebuild.
Patrol Read
The patrol read gives the read & verify test in the entire area of HDDs. It can be performed for all HDDs assigned to virtual
disks and hot-spares.
The Patrol Read allows subsequent defects of HDDs to be detected and repaired.
For HDDs configuring redundant virtual disks or those assigned to hot-spares, error sectors detected during Patrol Read can be
repaired.
IMPORTANT: Note the following for the patrol read:
„
For the Internal RAID Controller, Patrol Read feature is factory-set to "Enabled". For Disk
Array Controller (for external SAS HDD), Patrol Read feature is either enabled or disabled