Composite hostids for the NetWorker server:
To avoid re-hosting NetWorker licenses in the event of a NetWorker server failover to a secondary host, use a composite hostid. A composite hostid is a way of creating a single ID for both the active and passive node so that single license can be used. A composite hostid is supported for any active-passive scenario, either in clustered or replicated NetWorker server environments.
NetWorker licenses are tied to the NetWorker server’s host ID. However, a virtual host does not have a host ID. Thus, when the NetWorker server is clustered, it is necessary to create a composite host ID generated by combining the host IDs of all nodes in the cluster. To create the composite host ID, determine the host IDs of all nodes in the cluster and enter them into the hostids file in the NetWorker resource directory. All of the host IDs should be placed on a single line, separated by colons. The line should not contain any spaces. It is necessary to restart the NetWorker server daemons or services after creating or modifying the hostids file. When creating a License resource, NetWorker checks for the existence of the hostids file and, if it exists, automatically generates the composite host ID from its contents.