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PDC upgrade to Server 2003 and DNS with different Domain name

Posted on 2004-08-16
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I have an NT4 architecture that I am upgrading to Server 2003 and Active Directory. My dillema is that the domain that  I have for my current dns structure is different that the Active Directory domain that i want to use. My NT4 domain is xyz and my internal dns is abc. I want the clients to still log into domain xyz in the future Active Directory namespace, but i also want my internal name resolution to remain abc. I understand that with AD that i can append dns suffixes with domain group policies, but what is the upgrade path for my current nt4 domain box with dns and dhcp running. BTW the box is W2k, just in an nt4 domain. I have the abc domain but no relevance to the xyz domain that my new namespace will be because i wanted to do an inplace upgrade to make the accounts and users move over easily. I assuming i can just create another zone on my current dns box to do a transfer from the new active directory dns namespace.

Any help appreciated.
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Question by:farvin
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by:Sembee
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I would test this first... (Virtual PC or VMWARE demo is good for this) but during the wizard you should be able to select a different DNS name to Domain name. When configuring the TCP/IP properties etc you will just need to ensure that you put the right domain name in to the config.

Simon.
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by:farvin
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All the zones on my current dns box are not AD integrated, just primaries. So when I upgrade my nt4 pdc to 2003 and AD, just used the dns domain of my current dns box? But i do want to take advantage of AD integrated zones but how to accomplish this with dcpromo naming the ad namespace with whatever the ad domain is called. which is different from my current dns namespace.

and also what about all my desktops that will be logging into the AD namespace with the fqdn of the domain. I understand with domain group policies i can add any dns name suffix i want
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by:Sembee
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Configuring AD will mean that a new dns name space will be created to match the AD DNS name. There are loads of additional entries made in DNS which are used by Active Directory for day to day work. AD requires DNS to work.

If you want to use AD integrated zones you have two choices.
1. Move all DNS entries to the AD zone.
2. Use the existing DNS name as your AD zone.

I don't understand what you mean by desktops "logging into the AD namespace with the fqdn of the domain". The desktops will not care about the FQDN except ensuring they are part of it, can reach the required DNS server to read it. As long as everything is what the desktop is expecting then it is fine. The FQDN will be set on the machine when it is joined to the domain.
The additional domain suffix is for name resolution - it doesn't play a part in the login process.

Simon.
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by:farvin
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I guess my question is what do i do with my current dns structure since it has a different name than that of the AD name that I choose when i upgraded my nt4 pdc to ad? I see no option to use a different dns name than that of the one that dcpromo takes when running. All it says is that dns is not installed and would you like to install, at that point it takes the name of the ad domain. which once again is different than my current dns namespace.

hope this makes sense
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Sembee earned 500 total points
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Don't upgrade then.
If you want complete control over the process you will have to build a new domain, trust it with the old one then move the resources across.

Simon.
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