Update Child Domain to 2008 from 2003 concerns

Posted on 2011-03-16
Medium Priority
Last Modified: 2012-05-11
Within my company we now run 2008 at the top of the Forest, then within that forest sits our parent domain, who are running 2003 currently, and then we are a child domain of theirs and we run a 2003 domain as well.

The question is, been as at forest level it is 2008, can I update my domain to 2008 also, even though my parent domain is on 2003? Or does my parent domain also have to be 2008 before I upgrade?
Question by:RPUKsupport
LVL 15

Expert Comment

ID: 35146202
You need to run Forest/Prep - Domain/Prep by your comment you have already done this.

When you upgrade all the Server to 2008, you can then raise the Forest and Domain Functional Levels to 2008.
LVL 15

Expert Comment

ID: 35146228
It is also worth noting that in order to raise these levels you need to be a member of the Domain Admins group or Enterprise Admins group. You can do this from Active Directory Domains and Trusts.
LVL 10

Expert Comment

by:Muzafar Momin
ID: 35146271
you can update the domain to 2008 it will not impact
Creating Active Directory Users from a Text File

If your organization has a need to mass-create AD user accounts, watch this video to see how its done without the need for scripting or other unnecessary complexities.


Expert Comment

ID: 35146275

Author Comment

ID: 35146279
Thanks, I know how to do that part, I was unsure of the local domain level as I am the child domain of a 2003 domain if that makes sense.
Sounds like all I need to do is get a couple of 2008r2 servers and go from there?
LVL 15

Accepted Solution

James earned 1000 total points
ID: 35146288
Once you have raise the Domain and Forest functional levels there is no going back. So, make sure you have access everything to prepare for the upgrade.

Also, know which Domain Controllers hold the FSMO Roles. This is very important. There are 5 FSMO Roles, The Schema Master Role, Domain Naming Master Role, the Infrastructure Master Role, the RID Master Role and PDC Emulator Role.

Make sure to transfer these Roles to a Windows Server 2008 Domain Controller.

Because, you have a child Domain you will have 3 FSMO Roles - The RID Master, the Infrastructure Master and the PDC Emulator. These 3 roles are Domain Wide. The Schema Master and the Domain Naming Master are Forest Wide and they reside on the first Domain Controller installed in the Forest.
LVL 24

Assisted Solution

Awinish earned 1000 total points
ID: 35146664
Domain functional level depends on level of OS running in it & forest functional level depends on DF.L
You raise the DFL when all the OS of DC(not to confuse with memberserver, in windows 2003 domain you can run member server with windows 2000)is at same level.
You need to run adprep32.exe /domainprep on child domain & still you can introduce windows 2008 DC with FFL set to windows 2008.

Take a look at my artcile.

Featured Post

Easily manage email signatures in Office 365

Managing email signatures in Office 365 can be a challenging task if you don't have the right tool. CodeTwo Email Signatures for Office 365 will help you implement a unified email signature look, no matter what email client is used by users. Test it for free!

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Scripts are great for performing batch jobs against users, however sometimes the GUI is all you need.
The article explains the process to deploy a Self-Service password reset portal I developed a few years ago. Hopefully, it will prove useful to someone.  Any comments, bug reports etc. are welcome...
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…
This tutorial will show how to configure a single USB drive with a separate folder for each day of the week. This will allow each of the backups to be kept separate preventing the previous day’s backup from being overwritten. The USB drive must be s…

624 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question