We have a new Microsoft Windows Server 2012 R2 Standard server that we have made a Global Catalog/Domain Controller/DNS server to replace our secondary DNS server which is a Windows 2003 Server.
We have already prepared the Forest and replication has been tested but our question is twofold. Can we run DCPROMO on the Windows 2003 and this will also get rid of DNS on the 2003 server and how can we get the end user systems to see the new secondary 2012 DNS server?
The servers and other equipment that have static IPs have been manually changed and the new server listed in the DNS entries as static but how can we quickly/easily get the rest of the equipment to see the new DNS server? IPCONFIG /FLUSHDNS?