Windows 2000 SP4 Domain ControllersI have two Windows 2000 SP4 Server DCs that are hosted on a VMWare box that are only 4GB partitions and therefore can't do an in-place upgrade to Windows 2003 due to disk space limitation etc.  I do have another server I can use..meaning I can build that server fresh with windows 2003 and make it a 2003 DC for this same domain and de-commission one of the other 2000 DCs etc.  Then free up another server to remove the other 2000 DC.  Can I operate with mixed DCs at 2000 and 2003 OS?  What do you recommend for the best process to do this?  What do I need to be aware of and what pre-reqs should I do prior to starting?  Do I need to move any DC roles over to the 2003 server etc?  Thanks much for your help. I just want to make sure I have my ducks in a row prior to starting.<br>Also, my exchange server is already running windows 2003 std sp2 and exchange 2003 sp2 so I assume I am good to proceed without any changes there etc.© 2009 Microsoft Corporation. All rights reserved.Tue, 10 Mar 2009 20:33:39 Z21cd71ee-9423-4ed8-9031-1774ba526751http://social.microsoft.com/Forums/en-US/interopconversations/thread/21cd71ee-9423-4ed8-9031-1774ba526751#21cd71ee-9423-4ed8-9031-1774ba526751http://social.microsoft.com/Forums/en-US/interopconversations/thread/21cd71ee-9423-4ed8-9031-1774ba526751#21cd71ee-9423-4ed8-9031-1774ba526751BMSFVhttp://social.microsoft.com/Profile/en-US/?user=BMSFVWindows 2000 SP4 Domain ControllersI have two Windows 2000 SP4 Server DCs that are hosted on a VMWare box that are only 4GB partitions and therefore can't do an in-place upgrade to Windows 2003 due to disk space limitation etc.  I do have another server I can use..meaning I can build that server fresh with windows 2003 and make it a 2003 DC for this same domain and de-commission one of the other 2000 DCs etc.  Then free up another server to remove the other 2000 DC.  Can I operate with mixed DCs at 2000 and 2003 OS?  What do you recommend for the best process to do this?  What do I need to be aware of and what pre-reqs should I do prior to starting?  Do I need to move any DC roles over to the 2003 server etc?  Thanks much for your help. I just want to make sure I have my ducks in a row prior to starting.<br>Also, my exchange server is already running windows 2003 std sp2 and exchange 2003 sp2 so I assume I am good to proceed without any changes there etc.Tue, 10 Mar 2009 12:33:15 Z2009-03-10T14:21:03Zhttp://social.microsoft.com/Forums/en-US/interopconversations/thread/21cd71ee-9423-4ed8-9031-1774ba526751#f32251f7-7316-44fc-8c91-f4c51ff5b979http://social.microsoft.com/Forums/en-US/interopconversations/thread/21cd71ee-9423-4ed8-9031-1774ba526751#f32251f7-7316-44fc-8c91-f4c51ff5b979John Dunninghttp://social.microsoft.com/Profile/en-US/?user=John%20DunningWindows 2000 SP4 Domain Controllers Hello BMSFV,<br>     This forum is for helping customers interoperate with Microsoft Products via our Open Protocol Documentation. Information on this program can be found here: <a href="http://www.microsoft.com/protocols/default.mspx">http://www.microsoft.com/protocols/default.mspx</a> and the documentation itself can be found here: <a href="http://msdn.microsoft.com/en-us/library/cc203350.aspx">http://msdn.microsoft.com/en-us/library/cc203350.aspx</a>. Your issue does not appear to be related to our protocol documentation.<br><br><br>However the below article may provide you with what you are looking for:<br><br><a href="http://support.microsoft.com/kb/325379">http://support.microsoft.com/kb/325379</a><br><br> <p style="margin:0in 0in 0pt"><span style="font-size:10pt;font-family:'Arial','sans-serif'">Thanks</span></p> <p style="margin:0in 0in 0pt"><span style="font-size:10pt;font-family:'Arial','sans-serif'">John Dunning</span></p> <p style="margin:0in 0in 0pt"><span style="font-size:10pt;font-family:'Arial','sans-serif'">Senior Escalation Engineer Microsoft Corporation</span></p> <p style="margin:0in 0in 0pt"><span style="font-size:10pt;font-family:'Arial','sans-serif'">US-CSS DSC PROTOCOL TEAM</span></p>Tue, 10 Mar 2009 15:43:05 Z2009-03-10T15:43:05Z