Nortel Networks 400 4.0 User Manual

Chapter 19 System monitoring and troubleshooting

BCM200/400 4.0 Installation and Maintenance Guide

Use the procedure in this section to display a status report that summarizes primary master and 
mirror master hard disk installation and operational information. The status report is valid only for 
systems equipped with a RAID configuration.

Open Element Manager.

From the Administration tab, click System Status, and then click Disk Mirroring.

The Disk Mirroring screen displays, which displays the hard disk operational status 
information.

Confirm that the primary master and mirror master hard disks are functional (see 

).

Use this procedure to verify and monitor the disk mirroring process. Disk mirroring is the process 
of duplicating the data from one hard disk to the other. After RAID installation and system bootup, 
the system automatically detects the presence of a RAID configuration and begins the disk 
initialization and mirroring process. This procedure is valid only for those systems equipped with a 
RAID configuration.

Note: You must ensure the system status monitor service is enabled to monitor primary 
master and mirror master disk operation and disk mirroring activity.

Table 82   Step table

The hard disks are not identical. Use Nortel equipment to ensure the hard disks meet minimum 

requirements.

The software has detected 
unequal hard disk storage 
capacity. 

For 3.5x version software (and later), the system automatically adapts for 
unequal hard disk capacity. The system continues to operate. Nortel 
recommends that you perform the following:

•

Examine the status report to determine which hard disk has the 
smaller capacity.

•

Replace the smaller hard disk (primary master or mirror master) with a 
new hard disk of equal size (or larger).

The RAID is not in mirror mode. Change the disk mirroring function to mirror mode.

A hard disk is not operational.

Exchange the malfunctioning hard disk with a new hard disk.