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Windows 2003 R2 Migration to Windows 2008 R2


I am currently migrating a Windows 2003 R2 AD to Windows 2008 R2 AD.  I have done all of the upgrades and demoted all of our current 2003 DCs and am ready to raise the functional level to Windows 2008 R2.

Are there any concerns that I need to be aware of before raising the functional level.  We have 17 sites all together and I definently need to make sure that it is a smooth transition.

Network Background:

-  We have a mix environment that utilizes Windows XP, 7 and 8
-  We utilize DFS (Windows 2003 R2)
-  Windows 2003 DHCP
-  Exchange 2007 SP2
-  Certficate Authory (2003 Member Server)
-  2 Terminal Server Licenses Server (2003 Member Server and 2008 Member Server)
-  Citrix Servers (4.5 on windows 2003 servers)
-  All of our applications are database driven (SQL 2000,2005 and 2008)
-  We do not utilize print servers at this time

Thank you for all of your help in advance
2 Solutions
Mike KlineCommented:
You should be good to go, make sure you read the blog below


The only one I'm not 100% sure of is SQL 2000, we don't have any of those.  I'll add the SQL topic to this one too.


Will SzymkowskiSenior Solution ArchitectCommented:
As Mike stated this does look fine to upgrade. Raising the Functional Level only Enables new features of Active Directory. Just ensure that before you raise the functional level that your sites/DC's are replicating accordingly. If you have no replications issues it should be seamless.

If you have any old legacy apps that require LDAP v1 then you could run into issues with when using server 2008 as a DC. But you have obviously been using 2008 DC's in your environment for sometime now so all should be good.


thomasm1948Author Commented:
Thank you both for all of your help
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