Parent and Child domain info

Dan560
Dan560 used Ask the Experts™
on
Hi,

If I create a child domain of the parent domain lets call it abc.com and my child domain is called child.abc.com, will the parent domain and the child domain replicate active directory objects between them? Like computers, users and groups etc..I am new to the parent and child setup in windows 2003.

Thanks
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Top Expert 2013
Commented:
No they wont' replicate from parent to child.
In AD there are naming contexts/partitions
these include the domain partition http://technet.microsoft.com/en-us/library/bb123839(EXCHG.65).aspx
, configuration partition http://technet.microsoft.com/en-us/library/aa998375(EXCHG.65).aspx , and
schema partition http://technet.microsoft.com/en-us/library/aa998469(EXCHG.65).aspx
The config and schema are replicated throughout the fores while the domain partition is only replicated within the domain.
You do have global catalogs which do hold info about all the objects in both parent and child but I think what you wanted to know was suppose you create UserA or ComputerA in the parent will that replicate to the child domain and the answer to that is no.
Thanks
Mike
Chris DentPowerShell Developer
Top Expert 2010
Commented:

No, they won't replicate quite like that.

Some of the attributes of those objects (users, groups, computers, etc) will replicate into the Global Catalog, which the two domains will share, but that isn't the same as seeing them in AD Users and Computers.

You won't be able to log onto both domains as a single user (for example).

What are you trying to build?

Chris

Author

Commented:
Well this is my original question regarding my domain setup:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_24827713.html

Please feel free to comment on that if you have any suggestions.

Basically I want to be able to create two child domains. Both of these domains are company's that work under the same parent company. Basically all I want is to add a SharePoint and a Mail server (open-xchange) to the parent domain and have users in both the child domains access both of these servers.


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Chris DentPowerShell Developer
Top Expert 2010

Commented:

SharePoint should be okay over a Forest. You should be able to grant access to that using accounts from each child domain. It's Open-Xchange I can't speak for, never used it and I've no idea how it'll behave in a multi-domain forest.

Personally I would push for a single domain unless there is a very strong reason to go for separate domains in a forest. A single domain is considerably easier to manage and has few disadvantages over the multi-domain model in the majority of cases.

Chris
Top Expert 2013

Commented:
Agree as usual with Chris..stick with one domain if you can

Author

Commented:
Would it be possible to just scrap the child domain setup and create a trust between child company1 and company2? I have no idea about OX but would SharePoint be able to handle login requests through a trust?
Chris DentPowerShell Developer
Top Expert 2010

Commented:

It's possible, but it does make your implementation more complex. It depends what you're going to be doing with Sharepoint. All in all, should work, but like everything, it requires full testing.

Chris

Author

Commented:
Thanks guys

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