[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Can server 2008 be a domain controller when all existing domain controllers are 2008 R2

Posted on 2014-08-29
Medium Priority
Last Modified: 2014-08-29
Hi all, I have one domain with all domain controllers as 2008r2. Here is the question, can I add a server 2008 domain controller or does it have to be R2 ?
Question by:Jason Thomas

Assisted Solution

MarcusSjogren earned 668 total points
ID: 40292447
yes - that is indeed possible, but I think you should read the below thread and related articles as they might give you some more information about it.

The only thing I am unsure about is whether you can have the 2008 R1 raised to full 2008 R2 forest functionality.

LVL 57

Assisted Solution

McKnife earned 668 total points
ID: 40292477
It depends on the domain and forest functional level. If that is set to 2008R2, you cannot use 2008 "R1", and you cannot change that, either.
LVL 14

Accepted Solution

Brad Groux earned 664 total points
ID: 40292524
As McKnife said, it depends on your domain's Forest Functional Level (FFL). The FFL can only support equal or "newer" versions of Windows, FFL is NOT backwards compatible.

As an example, a 2008 FFL can support 2008, 2008 R2, 2012 and 2012R2 - but it can't support 2000 or 2003. NOTE: I am speaking of Domain Controllers ONLY. A 2008 FFL can support all versions of Windows servers.

To verify the functional level of your domain and forest follow these steps:
1. From the Administrative Tools menu, select Active Directory Domains and Trusts.
2. Right-click the root domain, then select Properties.
3. Under the General tab, the Domain functional level and Forest functional level is displayed on the screen.
Forest Functional Level

Author Closing Comment

by:Jason Thomas
ID: 40293784
Many thanks chaps. My domain is 2008r2 so can't use the 2008 DC . Learnt a lot here from all answers so many thanks.

Featured Post

Get your Conversational Ransomware Defense e‑book

This e-book gives you an insight into the ransomware threat and reviews the fundamentals of top-notch ransomware preparedness and recovery. To help you protect yourself and your organization. The initial infection may be inevitable, so the best protection is to be fully prepared.

Question has a verified solution.

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

Here's a look at newsworthy articles and community happenings during the last month.
In the absence of a fully-fledged GPO Management product like AGPM, the script in this article will provide you with a simple way to watch the domain (or a select OU) for GPOs changes and automatically take backups when policies are added, removed o…
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
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…
Suggested Courses

873 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