15.1 Approaches to NNMi data resilience

NNMi supports two approaches to protecting the NNMi data in case of hardware failure:

• Application failover

  NNMi application failover provides for disaster recovery by maintaining a copy of the NNMi database transaction logs on an identically configured system. For details, see Chapter 16. Configuring NNMi for Application Failover.

• Running in a high availability (HA) cluster

  Running NNMi in an HA cluster provides for nearly 100 percent availability of the NNMi management server by maintaining the NNMi database and configuration files on a shared disk. For details, see Chapter 17. Configuring NNMi in a High Availability Cluster.

In both approaches, if the current NNMi management server fails, the second system automatically becomes the NNMi management server.

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