License Server Redundancy

The License Server Redundancy can be achieved through the following options:

Storing the licenses on a hardware dongle that can be attached to a backup server in the event of a hardware failure.
If dongle-free licensing cannot be avoided, several license servers can be established, each holding only a share of the full license contingent. In this scenario, all the license servers must be added to the client-server search list. Also, the license servers need to be backed up frequently to ensure a restore of your companies licenses. Please refer to Backup Strategy for the details in the cloud environments.

Viz Licensing Administrator Guide