Configuration By Internal Raid Controller; Rebuild; Manual Rebuild; Auto Rebuild - NEC Express5800 120Rj-2 User Manual

User Guide

Configuration by Internal RAID Controller

This section describes how to set the internal hard disk drives as a RAID System using
the Internal RAID Controller of the 2.5-inch disk model.

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 using the Universal RAID Utility, the
management utility of the Internal RAID Controller. Select a HDD and start the
Rebuild manually.
Refer to the "Universal RAID Utility User's Guide" in NEC ExpressBuilder DVD that
comes with the server.

Auto Rebuild

The Internal RAID Controller can automatically start the Rebuild.
The Auto Rebuild can be of 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 defective.
Hot-swap Rebuild
Automatic Rebuild by hot-swapping a defective HDD.
■
The HDD used for the Rebuild should have the same capac-
ity, rotation speed, and standard as the defective HDD.
■
During a Rebuild, the processing rate is decreased becaus
of the high load.
■
During a 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 pos-
sible. 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 sec.
■
If the hot-swap Rebuild does not operate, perform a Manual
Rebuild.
Note the following for the Rebuild:
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