Migrate SBS 2008 Domain to Windows 2008

Migrate SBS 2008 to Windows 2008 Server

Step 1: Backup the SBS 2008 Box (Make sure SBS 2008 is in Healthy State)

Step 2: Introduce Windows 2008 to the SBS 2008 Domain
Use the below link to make it an additional domain controller in the same domain as SBS 2008
Installing an Additional Domain Controller
http://technet.microsoft.com/en-us/library/cc733027(WS.10).aspx

Step 3: Introduce another Windows 2008 as a member server
* Install Windows 2008 on another new box
* This Windows 2008 server would be used for Exchange server 2007 installation as it is not recommended that you run Exchange on a domain controller
* Use the below link to make this Windows 2008 as a member server and join it to the SBS 2008 domain

Introduce a Windows Server 2008-Based Member Server
http://technet.microsoft.com/en-us/library/cc771368(WS.10).aspx

Join a Domain from a Workgroup
http://technet.microsoft.com/en-us/library/cc772134(WS.10).aspx

Step 4: Install Exchange 2007 on the Windows 2008 member server
*Install Exchange 2007 on the Windows 2008 member server

How to Perform a Typical Installation Using Exchange Server 2007 Setup
http://technet.microsoft.com/en-us/library/bb123694.aspx

Step 5: Remove POP3 connectors from SBS 2008 because these are not supported in Exchange 2007

Step 6: Public Folder Replication from SBS 2008 to Exchange 2007
* Start replicating the public folders between the Exchange 2007(part of SBS 2008) and the standalone product of Exchange 2007

How to Configure Public Folder Replication
http://technet.microsoft.com/en-us/library/bb691120.aspx

* After replication of public folders, move the Public folder content

How to Move Public Folder Content from one Public Folder Database to Another Public Folder Database
http://technet.microsoft.com/en-us/library/bb331970.aspx

Step 7: Move Offline Address Book from SBS 2008 to Exchange 2007
How to Move the Offline Address Book Generation Process to another Server
http://technet.microsoft.com/en-us/library/bb123917.aspx

 Step 8: Move Mailboxes from SBS 2008 to Exchange 2007
How to Move a Mailbox Within a Single Forest
http://technet.microsoft.com/en-us/library/aa997961.aspx

Step 9: Similarly, all the other server data(WSS, WSUS, SQL) can be moved to the standalone server.

Step 10: Transfer the FSMO roles

* Transfer the FSMO roles to the Windows 2008 which is running as an additional domain controller.
* From this point on, you have 7 days to complete the migration.

Using Ntdsutil.exe to transfer or seize FSMO roles to a domain controller
http://support.microsoft.com/kb/255504

Step 11: Uninstall Exchange 2007
How to Completely Remove Exchange 2007 from a Server
http://technet.microsoft.com/en-us/library/bb123893.aspx

Step 12: Demote the SBS 2008 as a domain controller
Demote a domain controller
http://technet.microsoft.com/en-us/library/cc740017(WS.10).aspx

Step 13: Format the SBS 2008 box

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