Example failover hosting with NCIM topology database high availability

This is an example of failover hosting where the failover configuration includes a copy of the NCIM topology database on the backup installation.

In any failover configuration, both the primary and backup Network Manager domains connect to the same database, but in a failover set up with database high availability configured, the database is replicated on the standby database server.

Note: In previous Network Manager releases, users could include an NCIM topology database failover configuration by using NCIM replication (also referred to as NCIM topology database replication). The NCIM replication feature has been replaced by the high availability feature that is provided by the supported database:
  • If you have a Db2® database, you can use the High Availability Disaster Recovery (HADR) feature to set up failover for NCIM.
  • If you have an Oracle database, you can use the Real Application Clusters (RAC) feature to set up failover for NCIM.

The following figure shows an example of hosting ObjectServer and Network Manager failover using five host machines.

Figure 1. Example failover hosting with backup NCIM topology database
Example failover hosting with NCIM topology database backup

For performance reasons, the NCIM topology database requires a high bandwidth connection to the Dashboard Application Services Hub server. If host machine 3 has multiple CPUs and sufficient memory, you can install the primary NCIM on host machine 3.

Install the core components on both host machines 1 and 2, and install the Web applications on host machine 3. Install the primary NCIM topology database on host machine 4 and the backup NCIM topology database on host machine 5.