I have a domain setup for my current company. We have an Exchange 2003 server and two dc's and a fileserver and database servers amongst others and a couple of terminal servers.
My boss is going to be starting up a few smaller companies and I have to figure out the best and cheapest solution to getting them up to speed with a domain and email and login accounts.
My initial solution was to purchase a DC/fileserver and a terminal server for them. I would then create the domain as a child domain for it in my existing forest. I would then use the existing Exchange server to distribute email and create a new database on our existing database server for them to use .This would obviously require trusts between the domains in order to share the exchange servers. I have seen this solution work in my previous job but it was a pain to seperate them from the forest once they were big enough to go it solo.
I have since thought about purchasing Windows 2003 SBS for the startup company and have them in their own domain which has exchange already installed in the operating system and have them connect to their own terminal server. This to me sounds a better option but wanted opinions of others and maybe some one else has had a similar experience.
If I went for the second option of a seperate domain would I still be able to make it so that the CEO can have access to the startup companies information and fileshares from the comfort of his small office while still on our existing domain/forest. This formula would be used to roll out future small company startups. An would I be able to make it so that he startup company can access the oracle database we have setup on our server. The startup company has nothing really to do with my company other than they share the same shareholders so ideally would like them seperate.