is there a whitepaper about replicating a sql database between two virtual center servers. I am planning a DR environment and want to be sure VMware is supporting this.
It's a Microsoft feature, not VMware and lots of people do this.
what about the entry of the license server in the vc server // different hostnames and ip addresses ?
Your license server is separate from VirtualCenter - they don't have to be on the same box, and you can have machines from different VCs sharing the same licensing server.