Licensing and Hardware Components - HP UCMDB 10.30

Hello All,

I am planning for installation of HP uCMDB10.30, please suggest on the following:

a) How licensing in HP uCMDB 10.30 works, as far I know it is on the basis of OSI, but I have to discover Servers, Switches, Routers, Access Points, Applications and Middleware's. 

b) Will it be an issue if we consider - 1 DFP Server, 1 UCMDB Server and DB server for installation of HP uCMDB 10.30

c) What are the best practices regarding hardware components like server names, VLANs / subnets which we need to follow during hardware setup.

Thanks in Advance!!!