?
Solved

2003 DCs + 2008

Posted on 2011-09-27
5
Medium Priority
?
352 Views
Last Modified: 2012-05-12
We currently have about 6-8 Server 2003 Domain Controllers in our network.  We have created two Server 2008 R2 servers that we plan to promote to DCs as well, make one of them the FMSO, in the hopes of raising the functional level of the domain to 2008 level.

Is it possible to do all this while leaving the 2003 DCs in place?  Some of these DCs are in branch offices that will take some time to get to before they can be upgraded to Server 2008 or replaced entirely (some are not 64-bit capable).  What are the ramifications in leaving them in production?
0
Comment
Question by:SR_Tech
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
5 Comments
 
LVL 24

Accepted Solution

by:
Brian B earned 668 total points
ID: 36710833
As long as you don't raise the domain functional level above 2003, you should be fine.
0
 

Author Comment

by:SR_Tech
ID: 36710853
So it's not possible to raise the functional level until all DCs are running Server 2008?
0
 

Author Comment

by:SR_Tech
ID: 36710930
As well, is it a good idea to make one of the 2008 R2 servers the FSMO or should we leave it as one of the 2003 servers?
0
 
LVL 39

Assisted Solution

by:Krzysztof Pytko
Krzysztof Pytko earned 1332 total points
ID: 36710978
Hi, please visit my blog at http://kpytko.wordpress.com and look for adding first Windows Server 2008 R2 as Domain Controller in 2003 network.

Yes, there is no problem running 2008 and 2003 DCs together. You need to only prepare schema for new DC. And yes, transfer FSMO roles to one of the new DCs based on 2008. Microsoft recommends stroring them on the latest OS DCs.

The lowest OS on your DC determines the highest possible Domain Functional Level

Regards,
Krzysztof
0
 
LVL 39

Assisted Solution

by:Krzysztof Pytko
Krzysztof Pytko earned 1332 total points
ID: 36712036
OK, now direct links to posts :)

Addind the first 2008 R2 DC to 2003 network
http://kpytko.wordpress.com/2011/08/25/adding-first-windows-server-2008-r2-domain-controller-within-windows-2003-network/

Transferring FSMO roles
http://kpytko.wordpress.com/2011/08/26/transferring-fsmo-roles-from-gui/
http://kpytko.wordpress.com/2011/08/26/transferring-fsmo-roles-from-command-line/

and if you transfer FSMO roles (especially PDC Emulator master) you need to reconfigure time source in a forest

[...]- after transfer of the PDCEmulator role, configure the NEW PDCEmulator to an external timesource and reconfigure the old PDCEmulator to use the domainhierarchie now. Therefore run on the NEW "w32tm /config /manualpeerlist:PEERS /syncfromflags:manual /reliable:yes /update" where PEERS will be filled with the ip address or server(time.windows.com) and on the OLD one run "w32tm /config /syncfromflags:domhier /reliable:no /update" and stop/start the time service on the old one. All commands run in an elevated command prompt without the quotes[...]

it's an extract from one of MVP's blog at
http://msmvps.com/blogs/mweber/archive/2010/02/10/upgrading-an-active-directory-domain-from-windows-server-2003-to-windows-server-2008-or-windows-server-2008-r2.aspx

Krzysztof
0

Featured Post

Microsoft Certification Exam 74-409

Veeam® is happy to provide the Microsoft community with a study guide prepared by MVP and MCT, Orin Thomas. This guide will take you through each of the exam objectives, helping you to prepare for and pass the examination.

Question has a verified solution.

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

I was prompted to write this article after the recent World-Wide Ransomware outbreak. For years now, System Administrators around the world have used the excuse of "Waiting a Bit" before applying Security Patch Updates. This type of reasoning to me …
For anyone that has accidentally used newSID with Server 2008 R2 (like I did) and hasn't been able to get the server running again because you were unlucky (as I was) and had no backups - I was able to get things working by doing a Registry Hive rec…
This tutorial will give a an overview on how to deploy remote agents in Backup Exec 2012 to new servers. Click on the Backup Exec button in the upper left corner. From here, are global settings for the application such as connecting to a remote Back…
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
Course of the Month8 days, 16 hours left to enroll

764 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