Redundancy topologies

Important: In mission critical environments, it is highly recommended to reserve and checkout licenses to a node instead of configuring a redundant server. Reserving and checking out licenses to a particular node ensure that these licenses get permanently acquired on the node. This helps in effective disaster recovery of a single node. For more information, refer to 'Reserving Licenses ' and 'Checking Out Licenses' in the AVEVA Enterprise Licensing User Guide.

License Server redundancy is recommended when centralizing your licenses. In all redundancy topologies, a paired set of License Servers keeps licenses, reservations and status of licenses synchronized. A synchronized copy of all licenses is kept on the backup License Server, as well as a synchronized list of acquired licenses and the nodes that acquired them.

If the primary License Server becomes unavailable, products can acquire their licenses from the backup server.

The License Manager user interface allows enabling redundancy, and specifying the name of a backup License Server node to create a pair. For information and procedures about implementing redundancy, see Work with License Server redundancy.

Important: You must configure the primary and backup License Server node names at each node that hosts the software products. This identifies the primary and backup servers in the redundant pair. For this reason, it is recommended that you set up your License Server pair before installing your software products.