Setting up redundant license servers
Some large enterprises run three license servers on the same corporate subnet to ensure reliability. If you want to run redundant license servers, contact the Perforce license team to obtain a special license.
If you are using Reprise License Manager, instead of setting up redundant license servers, they recommend the use of Failover License Servers. For more information, see the Failover License Servers section in the RLM License Administration documentation.