Solved

Forest/Domain Functional Level

Posted on 2015-02-24
5
464 Views
Last Modified: 2015-02-24
Hi,

We have 4 domain controllers that run Windows Server 2008 R2. These have been introduced a while back and there are no other DC's that run a lower OS.

The domain functional level is running at Windows Server 2003 and the forest functional level at Windows 2000 (only one domain in the forest).

What order do I need to upgrade the forest/domain functional level in? Do I need to do the forest level first - to 2003, then to 2008 then to 2008R2. Or can I go straight to 2008 R2?

Do I raise the domain functional level straight after? Again to 2008 first, then to 2008 R2? Is there a specific order?

Anything I need to be concerned about or can I pretty much just do this on the fly?

Thanks
0
Comment
Question by:MFAFC
  • 2
  • 2
5 Comments
 
LVL 22

Assisted Solution

by:Joseph Moody
Joseph Moody earned 250 total points
ID: 40628374
Raise domain level first - straight to 2008 R2 is fine. Then raise forest.

You can pretty much do it on the fly.
0
 
LVL 22

Expert Comment

by:Joseph Moody
ID: 40628376
Just be aware that you can't add DCs lower than 2008R2 after raising level.
0
 
LVL 53

Accepted Solution

by:
Will Szymkowski earned 250 total points
ID: 40628378
What order do I need to upgrade the forest/domain functional level in? Do I need to do the forest level first - to 2003, then to 2008 then to 2008R2. Or can I go straight to 2008 R2?

In your case you can really do it any way you want. When you raise the Forest functional level 2000 to 2008 (example) it will also raise your domain functional level from 2003 to 2008.

So as a best practice it is a good idea to always raise the Domain Functional level first. If you raise the forest functional level it will force all domain's (even if there is more than 1) to go to what ever functional level the forest is set to.

This change is irreversible and you need to make sure that your AD replication is working properly.,
repadmin /replsum
repadmin /showrepl
repadmin /bridgeheads
dcdiag /v

Also you can go right from 2003 to 2008R2 no need to go to 2008. Same goes for the Forest functional level.

Will.
0
 

Author Comment

by:MFAFC
ID: 40628380
Thanks Joesph, appreciate the uber quick reply!

Yeah, I have no itnention of putting any DC's lower than R2 in. I just want to be able to take advantage of the AD recycle bin feature.
0
 

Author Comment

by:MFAFC
ID: 40628386
Thanks Will - very helpful with your response.
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes my battle tested process for setting up delegation. I use this process anywhere that I need to setup delegation. In the article I will show how it applies to Active Directory
Did you know that more than 4 billion data records have been recorded as lost or stolen since 2013? It was a staggering number brought to our attention during last week’s ManageEngine webinar, where attendees received a comprehensive look at the ma…
This tutorial will walk an individual through the steps necessary to configure their installation of BackupExec 2012 to use network shared disk space. Verify that the path to the shared storage is valid and that data can be written to that location:…
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…

756 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