Setting up redundant license servers on Windows

Rational® license servers can be set up in a fault-tolerant configuration known as redundant servers.

Redundant servers are a system of three servers that work as a team to manage a single pool of floating license keys. If one of the servers goes down, the other two license servers automatically continue managing the license pool. This type of redundant configuration requires that a minimum of two license servers started at all times. If any two license servers no longer work, the third license server will no longer serve licenses. Two servers must operate to serve licenses to clients.

To configure redundant license servers:
  1. Install Rational License Server software on three computers. See Working with a supported network configuration and Installing the server software on a Windows server.
    Attention: Use a redundant environment of either all Windows® servers or all UNIX® system servers.
  2. Import a license file that you receive from IBM on each license server. See Using floating keys on a Windows license server for more information.
  3. Start the license servers. The sequence is not important, but you should start the servers soon after one another. See Starting the Windows license server for instructions.
  4. Give client users the Primary, Secondary, and Tertiary (Backup) license server host names in the order in which you requested them in License Key Center. They must enter the host names in their License Key Administrators (LKAD).

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