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Update Windows Server 2003 Schema on multiple domain controllers?

I have a new SBS 2008 computer that I am using to replace (2) Server 2003 servers in our small company (neither of them actually has SBS installed on them).

As far as I can tell, both 2003 servers are domain controllers.

One of them is running Exchange which we are using for email.

Shared files and folders span both servers (I think the second one was added to give them more file space).

I need to run the AD migration prep tool on my SBS2008 DVD on one of the 2003 servers.

Do I just run the tool on one of the 2003 servers, or do I need to do it on both?  What issues do I need to be aware of here?

Thanks

Chris
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chrisrbloom
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chrisrbloom
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2 Solutions
 
Darius GhassemCommented:
You need to run on the Windows 2003 server running certain FSMO roles

http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/Windows_Server_2008/A_3644-Windows-2008-Server-R2-adprep-adprep32.html

You only need to do the schema update on the DC that holds these roles then this information will be replicated over to all other DCs.
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Krzysztof PytkoActive Directory EngineerCommented:
If your 2003 server is not an SBS I don't think it would be possible to use SBS 2008 migration tool.

In this case you have to run on Schema Master

adprep /forestprep /rodcprep

on the Infrastructure Master

adprep /domainprep /gpprep

to figure them out runon one of them in command-line

netdom query fsmo

then you will know where to run ADPREP tool
You can follow with this article about adprep'ing
http://www.petri.co.il/windows-server-2008-adprep.htm

then make your SBS as DC and you MUST transfer all FSMO roles to it.
How to do that you will find here
http://support.microsoft.com/kb/324801

Regards,
Krzysztof
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chrisrbloomAuthor Commented:
OK, one more question - it appears that the server that's holding my FSMO roles is NOT the one that has exchange server on it.

Is that a problem?  will I have to run an exchange update on that server?

Thanks.
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Krzysztof PytkoActive Directory EngineerCommented:
Nope, Schema update is not related with Exchange. You will do that on FSMO holder DC, that's all. It's one time action.

Krzysztof
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Darius GhassemCommented:
Nope doesn't matter
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JammyPakCommented:
if it's a schema update, that only needs to be done on one DC, but I would follow the 3-part series here:
http://msmvps.com/blogs/bradley/archive/2008/12/03/migrating-from-2003-to-sbs-2008.aspx
Susan Butler knows all about SBS....
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chrisrbloomAuthor Commented:
Thanks.  So other than changing Exchange to "Native Mode", there's nothing else to do to exchange server prior to the migration?  (In my case when I upgrade the schema on the FSMO Master which is another server).
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Darius GhassemCommented:
correct
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