Transfer Roles from Windows 2008 Stnd to Windows 2011 SBS

infedonetwork used Ask the Experts™
I have a Windows 2008 Standard Domain controler and I'm planing to replace it over the weekend with a SBS 2011.
I was wondering if I can promote the SBS as a secondary DC then Demote the existing DC and make the SBS 2011 the primary DC.
 That will save me few  hours of joining all the PC to the new doamain and transfer profiles.
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Before you demote the W2K8 DC, make sure you transfer the OM roles.

connect to server <your server name>
transfer <infrastructure master, naming master, PDC, RID master, schema master>


Once I run DCPROMO will not ask me if this is the last DC on the forest and if I answer no it will not automaticly transfer everyting to the SBS?
It will not transfer the roles automatically. If you do that, you will have to seize the roles. It's cleaner if you do the transfer up front before demoting your DC.


And if I do that should I expect any problems on the SBS or it should be a clean AD?
I try to save few hours of work but if there is a chance that something will go wrong later on I prefer to spend  those extra hours and have a clean install.
Somebody from microsoft was saying that SBS need to be the primary DC and can't be join as a secondary. It's that true? I know it's true if you leave it like that but if you transfer the FISMO and all teh roles then you demote the old DC I suppose that should be OK
All W2K8+ DCs are peers - the concept of primary and secondary are pretty much gone.

If it gives you comfort, transfer the roles and leave the 1st DC running for a few days.
Distinguished Expert 2018
There are two ways to install SBS. A normal install, or a migration install.

A normal install will lay down the OS, run dcpromo creating a new domain, and then I stall exchange. You will not have the opportunity to dcpromo the server yourself as a second DC in an existing domain. And because exchange is laid down, you cannot demote the server and repromote it either, that breaks exchange completely and you end up with an unusable install.

So if you want to keep your existing domain, you are looking at doing a migration install. This requires running the migration preparation tool on a source DC and creating a migration answer file. During the actual install, the SBS server still installs as above. The OS is laid down. Dcpromo is run (but this time into the existing domain), all FSMO roles are transferred (a requirement of SBS) and the exchange is installed. Again this is all automated and you have no opportunity to change when this happens.

So no, you will not be doing any dcpromo on the SBS server, regardless of which method you choose.

If you choose the migration method, technet has articles on migrating to SBS 2011 from SBS 2003 and 2008. While they do not have documentation for migrating from standard OS versions, the SBS documentation is still applicable and the process works the same. So for migrating from win2k8, follow the SBS 2008 documentation and skip the parts that clearly don't apply.



Ok so let me see if I understand. I'm a little slow this morning since I spend until 6 AM with Microsoft trying to fix that framewrok 2.0 corruption on the existing 2008 server with no sucess.

When I boot the server now I have two choices: Clean install and server migration.
I will chose servr migration and point to the existing domain.
I assume once is complete it the SBS will have all teh users and computers accounts.
From here I can go on Exchange that I believe is already installed and create a mailbox for every user. After that I can go to the old windows 2008 server and run ntdsutil to move all the roles to the SBS. Once done I run DCPromo on  the 2008 server and disjoint it from the domain.
Distinguished Expert 2018

Sorta. To install in migration mode, you *must* use an answer file. The migration preparation tool I mentioned above will help you create that. And the documentation I mentioned above covers the use of the tool in great detail.

Secondly, yes, you can create mailboxes for the users from Exchange. You'll also want to use the SBS console to apply the SBS AD templates to the users so that they have all the properties SBS expects them to have (documentation covers this as well.)

And finally, there is no need to use ntdsutil. As I said, the transfer of FSMO roles will happen during the automated dcpromo sequence. The only think you'll have to do is demote the 2008 server out of the domain once you've moved any other applications and data you choose not to keep on the old server.


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