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Replacing Windows 2000 DNS & Active Directory with new 2003 Server

Posted on 2006-11-01
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I will be replacing an existing Domain controller running server 2000 with an existing 2003 server,. I have a plan but am looking for some feedback & advise.

The 2000 server is currently the only domain controller & DNS server on the network.
The 2003 server is a member of the domain and currently just a file server

Please let me know if im on track with these steps.

1. Backup both servers fully
2. Promote 2003 server as an additional domain controller
3. Configure DNS lookup zones on 2003 server
4. Promote 2003 server to primary domain controller? (this im not sure of)
5. Configure one workstation to point its DNS to the 2003 server
6. reboot workstaion and test all network & active directory functions
7. Shut down 2000 server and test network operation
8. Reconfigure all workstations DNS settings
9. Test network
10. Retire old server
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Question by:davenyc71
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Lee W, MVP earned 125 total points
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Hi davenyc71,
> 1. Backup both servers fully

Excellent - make sure you do SYSTEM STATE backups - not just standard fulls.

> 2. Promote 2003 server as an additional domain controller

You've got a LOT more steps before you can do this.  You are essentially upgrading your domain to a 2003 Active Directory domain.  You'll need to run ADPREP at least once, possibly more if you have an R2 version of 2003.  See my links below.

> 3. Configure DNS lookup zones on 2003 server
If you integrate DNS with Active Directory, you'll really only need to install DNS and the records will be there.

> 4. Promote 2003 server to primary domain controller? (this im not sure of)
No such thing.  If you want to get rid of the old server (I would keep it - every network, if you have the hardware and licenses available, should have 2 DCs, for redundancy) you would need to ensure the new server is a global catalog server and transfer the FSMO roles to the new server.

> 5. Configure one workstation to point its DNS to the 2003 server
> 6. reboot workstaion and test all network & active directory functions
That's fine - testing is always good.

> 7. Shut down 2000 server and test network operation
Not a bad idea - even if you keep it running long term, shut it down short term to ensure everything on the new server is working correctly

> 8. Reconfigure all workstations DNS settings
Are you not using DHCP?  I would just change the settings there - bang - you have your clients set with correct DNS.

> 9. Test network
Again, testing is always good.

> 10. Retire old server
Again, you can... but why do you want to?  Migrate everything but DC functionality off it if you like, but keep it as a DC for redundancy.



Here are some links that should get you going for upgrading a 2000 domain to 2003:

Common Mistakes When Upgrading a Windows 2000 Domain To a Windows 2003 Domain
http://support.microsoft.com/default.aspx?scid=kb;en-us;555040

Hotfixes to install before you run adprep /Forestprep on a Windows 2000 domain controller to prepare the Forest and domains for the addition of Windows Server 2003-based domain controllers
http://support.microsoft.com/?kbid=331161

Commodore.ca | Windows | How To Upgrade Windows 2000 Domain to Windows 2003 Server
Quote from the top of this article: "Several glossy Microsoft presenters have stated that all you need to do to complete a Windows 2003 Domain upgrade is run ADPREP and then upgrade away.  This may work for very small / simple environments but it is definitely not good advice for most companies.  After upgrading five servers in two unrelated domains and installing many fresh copies of 2003 I can say that I personally would not skip a single step in the process I have developed below."
http://www.commodore.ca/windows/windows_2003_upgrade.htm

How can I transfer some or all of the FSMO Roles from one DC to another?
http://www.petri.co.il/transferring_fsmo_roles.htm

How To Create or Move a Global Catalog in Windows 2000
http://support.microsoft.com/?kbid=313994

[If you run Exchange 2000] Windows Server 2003 adprep /forestprep Command Causes Mangled Attributes in Windows 2000 Forests That Contain Exchange 2000 Servers
http://support.microsoft.com/default.aspx?kbid=314649

Windows Server 2003 Upgrade Assistance Center
http://www.microsoft.com/windowsserver2003/upgrading/nt4/upgradeassistance/default.mspx

[If using R2 release of Windows 2003] Extending Your Active Directory Schema for New Features in Windows Server 2003 R2
http://www.microsoft.com/downloads/details.aspx?familyid=5B73CF03-84DD-480F-98F9-526EC09E9BA8&displaylang=en

How to move a DHCP database from a computer that is running Windows NT Server 4.0, Windows 2000, or Windows Server 2003 to a computer that is running Windows Server 2003
http://support.microsoft.com/?id=325473

How can I move a DHCP database from one server to another?
http://www.windowsitpro.com/Article/ArticleID/13473/13473.html

How can I move DNS from one Windows 2000 Server to another Windows 2000 Server?
(Two Related if going 2000 to 2003 - read both before moving)
http://www.jsifaq.com/subG/TIP3300/rh3357.htm
http://www.jsifaq.com/SUBN/tip6700/rh6731.htm
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by:davenyc71
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Thanks Leew Performed the upgrade this weekend & your help made a difference everything went smooth thanks to the useful links and insructions. I decided to use the old server as an AD & DNS backup why not!
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