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Raising domain & forest functionality level during SBS 2008 migration

Posted on 2011-02-26
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I am currently migrating a SBS 2003 server to a new SBS 2008 server.  I am installing BlackBerry Enterprise Server Express on the SBS 2008 server.  I need to raise the domain and forest functionality level to 2008 before I can proceed with the installation.  Will this have any adverse effects?  I have migrating most of the users and Exchange mailboxes to the new server, but a few remain on the old SBS 2003 server.  I need the SBS 2003 server to coexist for a few more days while I transfer some applications.  
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Question by:thyneman
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by:withtu
withtu earned 100 total points
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you need to totally move the data from sbs2003 then demoted it gracefully, then rasing the SBS2008 to Windows Server 2008 function level. Otherwise the SBS2003 may not work.
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by:Glen Knight
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You won't be able to raise the functional levels to 2008 until after the SBs2003 sweet has been removed from the domain.

I would recommendyou leave the blackberry installation until you have finished the SBS Migration.

I've not heard of Blackberry Server requiring the functional level to be raised though, don't think I have ever done this.

By default SBS installs in 2003 functional levels and I've never changed this to install BES
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NavyIT earned 300 total points
ID: 34988643
I understand your reason behind raising the functional level. There is a known issue with authentication, the issue occurs due to differences of Kerberos encryption requirements for a Windows Server 2003 domain controller from the requirements for a Windows Server 2008 domain controller. However, this problem has been corrected with Blackberry Enterprise Server Express 5.0 Service Pack 1 Bundle (12). Try upgrading your Blackberry software and you shouldn’t have to raise your functional level..
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