Configuring high availability
When Tivoli Netcool/OMNIbus is configured for high availability, event loss is minimized, data integrity is improved, and performance is increased.
The multitiered architecture provides the backdrop for a high availability setup in which ObjectServers are deployed in a one-, two-, or three-tiered configuration. The multitiered architecture enables you to start your deployment in the aggregation layer or tier, and to add ObjectServer resources to the collection and display layers, as suitable for your requirements. The one-, two-, or three-tiered configuration is a prerequisite for configuring high availability; at a minimum, your system must be configured for failover and failback in the aggregation layer.
Your Tivoli Netcool/OMNIbus installation includes a set of customizations, which you can apply to your ObjectServers and ObjectServer Gateways to configure each layer. These customizations are provided in the $NCHOME/omnibus/extensions/multitier and $NCHOME/omnibus/extensions/control_shutdown directories.
The following configuration scenarios apply for high availability: