Upgrade windows server 2003 to windows server 2008 Domain

105 pts.
Tags:
Windows Server 2003 Domain
Windows Server 2003 to Windows Server 2008 Upgrade
Windows Server 2003 Upgrade
Windows Server 2008
Windows Server 2008 Domain
Windows Server Upgrades
Hello, What is the best approach to upgrade our current 2003 (full Functional Level) to a 2008 Domain.

New server hardware will be used for the Domain Controllers.

Any assistance would be greatly appreciated. Need to start planning soon. Thanks,



Software/Hardware used:
IBM Servers
ASKED: June 24, 2010  11:19 PM
UPDATED: June 30, 2010  5:41 PM

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If you domain is at Windows 2003 functional level you can only have Windows 2003 domain controllers so this is fairly easy. I assume from the information given you only have a single domain. I also assume you are using AD integrated DNS

You don’t say if you are using Windows 2008 or 2008 R2. I would recommend R2 if at all possible.

1. Upgrade the schema – need the schema master to do this. Remember R2 is 64bit only so you will need a 64bit machine to run this.

2 Install the new domain controllers as domain members. These two steps can be reversed if you need a 64 bit machine to run the schema upgarde.

3. Once the schema upgrade has replicated then promote the server to be a domain controller.

4. Repeat step 3 for as many domain controllers and locations as required.

5. DCpromo down the windows 2003 domain controllers, remove from domain and decommission/reuse

6. Raise domain/forest functional levels

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  • Magoo
    Hi Richs, Thanks for your reply, Here is my scenario, We have only one domain, all of our current domain controllers are 32 bit. The plan is to upgrade to Windows R2 on new hardware servers which are 64 bit. At the moment only one server 64 bit server has come in, hopefully the other units will arrive soon. So to upgrade the schema, I'll be running the command of "adprep32 /forestprep" first then followed by "adprep32 /domainprep". Note I've read in the Win 2008 Resource Kit book that they suggest to disconnect the server from the network when performing the schema upgrade, but I have not seen this recommended anywhere else, Is it standard practice to bring the server offline during the schema upgrade and then reconnect it so that it can replicate the changes? Perhaps it elimates replication issues? Please advise,
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