License Server

Hello Expert,

Need suggestion on below:

4 SM Application Servers are setup in environment. Out of which 1 app server's IP address (lets say XYZ) binded to generate license.

Due to some maintenance task lets say for 24 hrs the Server XYZ need to keep down.

What needs to be done during this 24 hrs to keep SM functionality working. How to deal with licensing part in this scenario. (do we need to generate/migrate license on another app server IP address or any other alternative?)

Please suggest.