23.3. Creating Multiple Domains

After the hard thinking is accomplished and the boss buys the idea of how you want to implement Active Directory, it is high time to put your ideas on the street. If not in production, you can at least deploy your desired Active Directory structure in a lab. So you need to know the straightforward steps for building multiple domains.

The process of creating a new domain is similar to creating the first domain. Beforehand, the domain name must be determined. Since changing a domain name is a hugely intrusive process, it needs to be locked down as in "There's no changing it." Like the initial domain, the new domain controller needs to be prepared to support Active Directory. It must also be able to resolve the forest root domain names through DNS. Then you'll run DCPromo to create the new domain.