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Active Directory and multiple domain controllers

I am currently running my domain on Server 2003, which is my primary dc. My secondary dc is running Server 2008 R2. I want to add a new domain, but I dont have another domain controller. Can I delete my secondary dc, add the new domain, and then make it my primary under the new domain? How will this affect Active Directory?
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2 Solutions
Joseph DalyCommented:
What you could do is make sure the 2008 server has no FASMO roles and DCpromo the 2008 R2 domain controller back to a regular server. Then disjoin it from your existing domain. At this point you probably will want to reinstall windows and then you can get set up as a DC for your new domain.

How this would affect your current domain would be that you would have no redundancy in your domain controllers any more.
nawright16Author Commented:
Alright... I'm a beginner so bear with me. Should I run DCpromo to remove the FSMO roles, or should that be done in Administrative Tools > Server Manager?
Prashant GirennavarCommented:
If your seconday DC has a FSMO roles then transfer the roles using NTDSUTIL Commandline to you primary DC first (i.e to your window server 2003 DC) ,

Below is the link which you can refer accomplish this task

Once the roles are tranffered then , run dcpromo wizrad and demote the domain controoler on window server 2008 R2 , and unjoin from the existsing domain.

Note -- No need of using Administrative Tools > Server Manager?  , Only use DCPROMO

Then you can use it as a new domain contorller for your new domain.

If you dont have fsmo roles on your secondary DC then you can directly demote the DC using DCPROMO and unjoin from the existsing domain and then use it for new domain.

Let me know if you need any further information.

hope this helps.


-Prashant Girennavar
nawright16Author Commented:
Im taking my time with this so I don't mess it up
nawright16Author Commented:
OK, here are a few questions that I have:
- Once I unjoin the server from the domain, how will the information on the server be accessed? I assume it cannot be.
-Once I add the new domain onto the server, how can transfer all the information from the old domain into the new one? (ie: pc's, files, fodlers, active directory)
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