Empty Forest GEAP.COM
3 Child Domains - am.geap.com, emea.geap.com, apac.geap.com
Larger locations contain one root domain controller for geap.com which also is a global catalog server.
All locations contain at one GC server for the child domain they represent.
My question is for the larger locations where both an empty forest domain controller (geap.com) exists and a child domain controller exists does it make any sense to have both these act as GC servers. Should only one of these be a GC and if so which one the empty forest DC (geap.com) or the DC that represents the child domain that it is currently in.