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FSMO Question

Posted on 2008-06-20
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Last Modified: 2010-04-18
Our Windows 2003 Domain Controller (the first in the forest, so I assume it has all the FSMO's on it) is running as both a DC and an Exchange server.  Since we do not want to rip off Exchange, we have decided to build a separate server, dcpromo it, and then move the FSMO's off to the new DC from the old DC/Exchange box.  Any problem in doing this? Would I be using the NTDSUTIL command?
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Question by:cytogenadmin
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KCTS earned 500 total points
ID: 21831684
Exchnage will not like it one little bit if you DCPROMO the server it is on and make it so its not a DC anymore. Exchange on a DC is always a proplem - hense all the advice NOT to do it

If you want to add a second DC and move the FSMO roles - fine but its not going to achieve much.
- You can use the GUI - no need to use NTDSUtil http://www.petri.co.il/transferring_fsmo_roles.htm
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Author Comment

by:cytogenadmin
ID: 21831756
What kind of problems can we run into with running DCPROMO on the Exchange server?  Would you recommend moving Exchange and leaving the DC alone?
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Expert Comment

by:Rikketyrik
ID: 21831772
I have successfully promoted/demoted a DC with Exchange using the standard DCPROMO. However, I may have been lucky. I would tread lightly and make sure you have good backups and a no plans for the weekend before proceeding.

Don't forget to transfer the Shema Master role. (Extra steps to do so).
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by:KCTS
ID: 21831781
It will break !

You only course of action is to install exchnage on another server, member server not a DC, migrate the mailboxes to the new exchnage server then remove exchnage from the orginal server.
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Expert Comment

by:TheCapedPlodder
ID: 21831784
KCTS is right.  Do not DCPROMO the Exchange server back to be a member but I gather you aren't planning to do this anyway.

You are correct in that you can add a second DC and transfer the FSMO roles either by NTDSUTIL or through the MMC.

A few thoughts to share:

Ensure the new DC is also a GC.
Install DNS on the new DC and if you haven't already done so convert your DNS zones to be AD integrated.  Once this is done you can repoint all your clients to the new DNS server for primary DNS and use the exisiting DNS server as a secondary.
If the current DC is also running DHCP or WINS consider moving these functions to the new server.

Anything else you need, just shout.

Cheers,

TCP
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Expert Comment

by:Rikketyrik
ID: 21831793
Moving Exchange would probably be the easiest and safest route to go with. That way you have Exchange on a clean machine. You will also have two clean DCs as well.

Before moving I would bring up the second DC and transfer the FSMO roles.
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Expert Comment

by:KCTS
ID: 21831813
if you go to all the trouble of moving exchange PLEASE DON'T put it on another DC - that will achive ZERO
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Expert Comment

by:Rikketyrik
ID: 21832115
Agreed. You are looking at 3 machines total.
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