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add SBS 2011 server to Window 2003 Active Directory domain

Posted on 2011-03-17
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Last Modified: 2012-06-27
I currently have one Windows 2003 Server acting as an active directory domain controller for 15 users/pcs. I would like to add a SBS 2011 server to the domain as the primary domain controller. I need to keep the 2003 server in place because it is hosting an oracle DB that is supported by a third party. Is this possible to do? Would it be considered a migration? Anyone know where I might find the steps to do this?
Thanks, Matt  
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Question by:pitboy
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Expert Comment

by:Alan Hardisty
ID: 35158606
Yes - it is perfectly possible to do but you would need to build the SBS 2011 server, join it to the existing domain and then transfer the FSMO roles to the SBS server and then the SBS server would be happy.

It is not really a migration as you are not migrating from anything - just adding SBS to the domain and switching the roles across.
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Accepted Solution

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pitboy earned 0 total points
ID: 35158707
I would install the SBS 2011 server using an answer file to join the existing domain? When I transfer the FSMO roles to SBS will that bring over all the user and computer accounts from the 2003 domain and create the Exchange mailboxes or will I need to do that manually?
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Assisted Solution

by:Alan Hardisty
Alan Hardisty earned 475 total points
ID: 35158807
Yes - you will need an answer file to automate the process of installing the server into the domain and transferring the FSMO roles across.

You will need to prepare the existing domain to allow the SBS server to join it and raise the domain functional level to Native 2003 mode, then run adprep /forestprep on the existing DC and then adprep /domainprep to ready the existing domain and then install / configure the SBS server and provide it the answer file.

There should be a sourcetool on the SBS 2011 DVD - that needs to be run on the 2003 DC.
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Author Comment

by:pitboy
ID: 35158912
Will this process demote the 2003 server to a member server? My concern is that this process might break something with the oracle DB.
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Assisted Solution

by:durango099
durango099 earned 25 total points
ID: 35159026
It will not demote, just transfer the FSMO roles to SBS. The 2003 server will still have dc services and no changes will befall the Oracle db.

Make a NTBACKUP of the system state before you begin any work on the DC. You may never need it, but you will be very sorry if you don't have it.

Like Alan said, you will need to upgrade the existing ad schema to have this work correctly. Drop the dvd into the 2003 server and run the prep tools.
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Author Closing Comment

by:pitboy
ID: 35187400
Thanks for the help!
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