Do I need to buy additional license?

Hi All,

We have two servers running in "backup mode", i.e. one as gateway server until the other one out of service. And now we want to change the setup to two individual server so we can separately assign each server to two difference group of users completely, which we think is a more efficient way to manage the server resources. Both server still running in the same Active directory domains, so the login account pool still from the same source.

So do we need to buy / change the our existing 2X license?

Million Thanks,
Eric