Join 2 domains to a new parent domain 1

[js00hd]

Ok guys, I need some help here. We have two domains NT4 and a 2000. My boss would like to know if we can create a new parent domain to sit above these domains and make the two current domains child domains of the new parent domain. Can this be done and if so how?

Thanks

JS00HD

 

[Seaspray0]

In effect you would like a structure like this?

mydomain.com is the parent domain and
subdomain1.mydomain.com and subdomain2.mydomain.com reside in the forest with it.

Here's the problem. subdomain1 and subdomain2 need to be created after you create the forest with mydomain.com. You already have them up and running. You can create trusts between your existing domains and a new forest, but adding existing domains to a new forest as subdomains isn't how it's done.

I see you doing one of 2 things:
1. create a new domain in a new forest. create 2 new subdomains in that new forest (optional). create trusts to your existing domains. Use tools to migrate users and groups to the new forest from your existing domains.
2. use your existing 2000 domain. create 1 or 2 subdomains under it if you want. Use tools to migrate the users and groups from the NT domain into the 2000 forest.

The first option involves the creation of a new forest, the second involves using your existing 2000 forest. Creation of subdomains is at your descretion in both. Note that 2000 can now do with organizational units what used to be done with subdomains in NT. Companies that used to have 10 domains now have a single domain. A single domain is much simpler to administer and cost effective. The only reason you should need subdomains is to isolate administrative duties across geographic or corporate boundaries.