Migrating Windows 2008 R2 (Non-SBS) Server to Windows 2011 SBS Server

Good Afternoon -

I've got my home domain hosted on a Windows 2008 R2 (NON-SBS) server and am trying to migrate it to a Windows 2011 SBS server.  

On the source server, I tried to run the Migration Prep tool, but it failed with the error that File Replication service wasn't running.  I set it to Automatic, but it wouldn't start.  While looking for why it wouldn't start, I found that it may throw that error due to the server being Non-SBS.

I found a few guides (even some on this site) for migrating from a non-SBS to SBS, but none of them were for 2008 R2 to 2011 SBS.  I would try some of them, but wanted to ask first simply because the ADPrep tool used in these guides isn't compatible with Windows 2008 R2.

I'm considering starting the domain over from scratch, but I have changed the scema a lot for my SCCM installation so would rather not if possible.

Any links or suggestions would be great - Thanks!
BzowKAsked:
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Cliff GaliherCommented:
Going from 2008 R2 to SBS 2011 does not require adprep because they are already the same schema level. The problem is that FRS is not running. FRS is the default service that replicates AD information between domain controllers on any AD network and therefore *should* be running on your DC. Wherever you read that it only runs on SBS is just plain wrong.

There are two possibilities:

1) Something is broken on your existing DC so FRS cannot run. That will cause AD replication to fail when you add the SBS 2011 server, so the source prep tool is accurately blocking the setup. You'll need to fix that.

2) Far more rare, but possible, is that you "switched" your replication topology from FRS to DFS-R. This is something that must be done manually and DFS-R *does* support replication. The source tool does not check for DFS-R though so it throws a false-positive. There is a way to fix that, but *only* if you know you made this change.

So....now you have the basics of the cause. How you go about fixing it depends on your circumstance above, #1 or #2.

-Cliff
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WilliamtheYoungOneCommented:
Hello Cliff,

Your second solution is interesting because we have already switched to DFS-Replication and the migration tool is throwing this false-positive, so i`m curious what your way is to fix this problem, can you please tell me your solution so i can continue my migration.

Thanks, Wim de Jong
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