Nortel Networks NN43001-106 - Manual (Page 520)

520 Backup and restore
The RMD rule type cannot be associated with a Geographic Redundancy
Database Replication Control Block. All RMD backup rules must be
excluded from the list of configured backup rules presented on the Element
Manager Database replication control page.
ATTENTION
The RMD rule type cannot be configured on a CP PII call server.
SCS rule type
CS 1000M Large Systems (CPP) and CS 1000E systems both provide
redundancy using dual processors. This allows a system to remain
operational following a local component failure.
Geographic Redundancy further increases the reliability of CS 1000M Large
Systems (CPP) and CS 1000E systems by providing a remote system to
serve as a backup for a local system. The remote backup ensures continued
service for all IP Phones in case of a catastrophic failure (for example, as a
result of floods or fire)
The secondary system database is replicated from the primary system
database. As a result, the secondary system must be the same type of
system as the primary system. That is, a CS 1000M Large System can
be backed up only by another CS 1000M Large System and a CS 1000E
system can be backed up only by another CS 1000E system.
To perform the database-replication process, an SCS backup rule must be
defined on the primary system. The backup rule identifies the destination
ELAN network interface IP address on the secondary system for the
database replication. It also defines the number of versions of the database
that are kept on the secondary system.
To complete the database replication successfully, the Backup Rule must be
referenced in the Database Replication Control Block. See Communication
Server 1000: System Redundancy (553-3001-307) for details.
The secondary system also uses the Backup Rule during the
database-restore operation to identify the appropriate database to restore.
A backup rule can also be defined on the secondary system to provide
replication to the primary system after a long-term failure. For details, refer
to Communication Server 1000: System Redundancy (553-3001-307).
The Element Manager backup rule configuration page specific to the SCS
rule type is shown in
Figure 11 "SCS rule type in Element Manager" (page
521) . The backup rule number control is static and cannot be changed
by the user.
Nortel Communication Server 1000
Features and Services - Book 1 of 6 (A to B)
NN43001-106 01.04 Standard
Release 5.0 27 July 2007
Copyright © 2007, Nortel Networks
.