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Active Directory

Posted on 2007-10-09
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I have a windows 2000 server with Active Directory.  I just installed a new server with windows 2003.  Is it flawless to says I can upgrade my active directory on my new windows 2003 server?  What steps do you recommend.
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Question by:high_sobo
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tigermatt earned 300 total points
ID: 20042847
You can upgrade Active Directory but the 2003 server has to be a DC. You first extend the schema so that it is compatible with 2003 (see here http://www.petri.co.il/windows_2003_adprep.htm) then use dcpromo to promote the 2003 server as a secondary domain controller. You cannot however use all the 2003 features if the 2000 server is still present and the domain level is still at 2000. You must first transfer all FSMO roles, DNS, DHCP etc. off the 2000 DC after promoting the 2003 DC and transferring it. Then, you can demote the 2000, raise the functional level of the domain and that would be the "upgrading" AD.
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by:high_sobo
ID: 20069289
Heres my scenario.  I just put in ms windows 2003 server R2.  I have two windows 2000 servers DC currently on my Lan.   The primary server is find but the backup server with windows 2000 server is giving me problems.  Its a hardware thing.  I would like to know can I demote my backup server with windows 2000 and promote my windows 2003 R2 on my Lan?  Will windows 2003 R2 co-exist in my lan? Can you recommend the steps for this.
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Author Comment

by:high_sobo
ID: 20079769
Heres my scenario.  I just put in ms windows 2003 server R2.  I have two windows 2000 servers DC currently on my Lan.   The primary server is find but the backup server with windows 2000 server is giving me problems.  Its a hardware thing.  I would like to know can I demote my backup server with windows 2000 and promote my windows 2003 R2 on my Lan?  Will windows 2003 R2 co-exist in my lan? Can you recommend the steps for this.
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by:tigermatt
tigermatt earned 300 total points
ID: 20079840
First of all, I would suggest you check your current 2000 server isn't a global catalog and that it doesn't host any FSMO roles. It it does, then you will need to remove them and move them to your existing server.
http://www.petri.co.il/configure_a_new_global_catalog.htm (Make sure your other, good 2000 server is set up as a GC first. If it isn't set it up as one and wait at least 15 mins for things to replicate)
http://www.petri.co.il/transferring_fsmo_roles.htm
Make sure it isn't a DHCP server and there aren't any non-replicated DNS zones on it.

Then use dcpromo to demote it out of its DC role.

Once it's out the domain I would then say you should let things update on your 2000 server for at least an hour. Then extend the schema using the information in my previous post. You would then be good to dcpromo 2003 into the domain as a DC. If necessary, you can then transfer FSMO roles, make it a GC, add DNS, DHCP etc.
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