Migrate Active Directory

Hi there, I have an SBS 2011 domain but have migrated the exchange to a hosted exchange server. This means other than the AD this server is redundant. I have a Windows 2012 Server in the background running applications and is only joined to the domain not AD.

What would be the best way to move the AD onto this and decommission the old SBS 2011 Server?

Thanks in advance
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Cliff GaliherConnect With a Mentor Commented:
If your 2012 server is currently running applications then I would *not* make it a domain controller. In general, mixing domain controllers and LOB apps is a bad idea for security reasons. But in this scenario, because the server already has LOB apps, you may actually have immediate and real problems.

Promoting a machine to a domain controller actually eliminates local accounts on that machine. MOST LOB apps run with some sort of local account configured so this promotion will break these apps, and repairing them is never trivial. Since it is a bad security practice anyways, there is just no compelling reason to go down this road.

If you have server 2012 Standard (which I assume you do since it is not a DC), you already have 1+2 virtualization rights. You can convert your existing LOB server into a VM. You can install a second VM on the same physical machine and make *it* a DC, and because your LOB server is remaining unchanged AND you haven't mixed environments, you avoid both problems above. Better security and won't break your apps. And, because you already have the licensing for it, no extra cost.

I'd strongly recommend you consider this instead.

Before starting verify good backups of both servers. Join 2012 server to the domain. Promote 2012 server to a domain controller. Transfer FSMO Roles to 2012 server. Transfer and shares and data to the 2012 server. Is SBS 2011 acting as a DHCP server if so transfer that over as well. Demote SBS from being a DC. I typically shut it down for a few days to verify then remove from domain and retire if no longer needed.
grovenetsupportAuthor Commented:
Ok thanks sounds simple!!!!!!!!!!
SandeshdubeySenior Server EngineerCommented:
Transition from Small Business Server to Standard Windows Server
http://blogs.technet.com/b/infratalks/archive/2012/09/07/transition-from-small-business-server-to-standard-windows-server.aspx .As new OS is windows 2012 you need not require to prepare the domain by adprep tool.

Migrate Windows Small Business Server 2011 Essentials to Windows Server 2012 Essentials
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