Question about adding Windows 2012 R2 Domain Controller, into a native Windows 2008 R2 single forest domain

Question

I current have a two server domain, both Windows 2008 R2 and fully updated.   The two servers are on subnet 10.0.1.0 /24
- Windows 2008 R2 Server A: 10.0.1.1 (DC, GC, FSMO, DNS)
- Windows 2008 R2 Server B: 10.0.1.2 (DC, GC)
AD Domain: COMPANY.LOCAL
I have a second connected subnet, 192.168.1.0 /24) which is routed to the 10.0.1.0/24 subnet and I would like to install a Windows 2012 R2 server onto a server on that subnet and make it a domain controller with AD-Integrated DNS and DHCP for the 192.168.1.0
/24 subnet.
- Windows 2012 R2 Server C: 192.168.1.1
What are the proper progression steps, in order to bring up the Windows 2012 R2 server and then add it to my COMPANY.LOCAL domain and then promote it do a DC/GC/AD-Integrated DNS server?   Are they anything like the following:
1. Install Windows 2012 R2 server (Server C)
2. Point Windows 2012 R2 server DNS servers at Server's A and B
3. Perform AD prep to extend AD schema to support Windows 2012 R2 domain controllers
4. Promote Windows 2012 R2 server to domain controller (install local DNS service on Server C, during this step)
* Question:  Will Windows automatically create a DNS zone for the Windows 2012 R2 subnet (192.168.1.0/24) AND also include the DNS zone from the previous Windows 2008 R2 domain (10.0.1.0 /24)?  Or will I need to add the 10.0.1.0 /24 zone to the DNS
server on Server C, even though the DNS from the Windows 2008 R2 domain is AD integrated?

Answer 1

Hi,
Regarding the issue here, please take a look into below articles:
System Requirements and Installation Information for Windows Server 2012 R2
http://technet.microsoft.com/en-us/library/dn303418.aspx
Release Notes: Important Issues in Windows Server 2012 R2
http://technet.microsoft.com/en-us/library/dn387077.aspx
Install a Replica Windows Server 2012 Domain Controller in an Existing Domain (Level 200)
http://technet.microsoft.com/en-us/library/jj574134.aspx
Here is an example for promoting Windows Server 2012 to a DC, see:
Step-by-Step Guide for Setting Up A Windows Server 2012 Domain Controller
http://social.technet.microsoft.com/wiki/contents/articles/12370.step-by-step-guide-for-setting-up-a-windows-server-2012-domain-controller.aspx
As the server is promoted to a DC, DNS Zones will be replicated and synchronized to it automatically whenever the new one is added to an AD DS domain,  bascially there is no special need to add zones,  for more information, please see:
Understanding Active Directory Domain Services Integration
http://technet.microsoft.com/en-us/library/cc726034.aspx
Hope this may help
Best regards
Michael
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