Features Of Internal Raid Controller - NEC Express 5800 User Manual

Hardware

Features of Internal RAID Controller

This section describes the features of Internal RAID Controller.
Rebuild
If a HDD is defected, the rebuild feature can recover the data in the defected HDD. This
feature can be performed to the redundant virtual disks such as RAID1,RAID5.
Manual Rebuild
The manual rebuild can be performed by using WebBIOS or Universal RAID Utility, the
management utility of Internal RAID Controller. Select a HDD and start the rebuild manually.
Auto Rebuild
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:
When executing Rebuild, note that
* Use the new HDD which has the same capacity, the same
performance(rpm), and the same specification as the old one
which is replaced because of a failure/error.
* While Rebuild, the system perforamance might be down.
* While Rebuild, don't shut down or reboot the system.
If the power was OFF accidentally while Rebuild, Power ON the
system as soon as possible. Then Rebuild will be restarted
automatically.
* More than 90 seconds interval is required between the timing of
removing the old HDD and the timing of inserting the new one.
* If Hot-swap rebuild does not work well,try Manual rebuild.
328