Nortel Networks 400 4.0 User Manual

Chapter 22 Replacing the hard disk

BCM200/400 4.0 Installation and Maintenance Guide

Use this procedure to upgrade an existing standard BCM200 or BCM400 single disk configuration 
to a RAID configuration.

Obtain the correct RAID field redundancy or upgrade components.

Shut down the system (see 

Disconnect the BCM system from the AC power source.

Attach one end of the grounding strap to your wrist and the other end to a grounded metal 
surface on the BCM main unit.

If applicable, remove the standard configuration hard disk cage from the BCM200 main unit 
or BCM400 advanced function tray. Refer to 

Remove the original programmed hard disk from the standard hard disk cage. Install and use 
the original programmed hard disk as the primary disk in the RAID configuration (see 

). For further information on how to replace the hard disks, refer to 

Install the RAID hard disk cage in your system. For further information, refer to 

 or 

Install the main unit cover and access panel (if required). 

Restore the BCM system to operation (see 

). 

After bootup, the system automatically detects the presence of a RAID configuration and 
begins the disk initialization and mirroring process. For further information on how to monitor 
the disk mirror process, refer to 

Caution: Use only Nortel-approved replacement components. Contact your account 
representative for the current list of approved replacement parts.

Note: RAID disk mirroring can take up to 3 hours to complete. The BCM system 
continues to operate normally during the disk mirroring process. However, because disk 
mirroring occupies computing resources, Nortel recommends that you perform disk 
mirroring during a period of low call traffic.

Nortel recommends that you perform any system reboot only as required and at the 
beginning of the disk mirroring process.