Solved

Keeping same hostname on DC after upgrading from 2003 to 2008

Posted on 2011-02-28
5
656 Views
Last Modified: 2012-05-11
Hello,

We are in the process of upgrading our domain from 2003 to 2008.  Right now we are towards the end of the migration -- we're upgrading the last 2003 domain controller to 2008.

The particulars:

DC01 is still running 2003 32-bit -- roles:  GC, DNS, it was FSMO.
DC02 is running 2008 R2 Std, GC, DNS, and FSMO roles have already been transferred to it.

These generalized steps are what I think I should do for the last dc, but I'd like someone to sanity check please:

1.  demote DC01.
2.  clean install 2008 R2 Std
3.  after install, keep existing hostname of DC01
4.  join to domain
5.  dcpromo DC01 to dc


-- The real question is: can we keep the hostname "DC01" ?  
(Someone I talked to suggested that I just use a new hostname instead of keeping my old hostname.  He thought that there may be lingering AD metadata.)

-- Should I delete any DNS entries for hostname DC01 after demoting?
-- How long should I wait between demoting DC01 and joining DC01 back to domain / promotion?
-- Should I perform a metadata clean up to make sure there are no lingering references to the (old 2003) DC01 ?

or should I do steps 1, 2, 3 (but with new hostname), 4, 5, and then re-name back to DC01 after it becomes a dc ?


thanks in advance.


 
0
Comment
Question by:jarak08
  • 3
5 Comments
 
LVL 10

Expert Comment

by:ThorinO
ID: 34999360
Personally I would just do an in-place upgrade without demoting/promoting.
0
 
LVL 21

Accepted Solution

by:
snusgubben earned 500 total points
ID: 34999410
When you demote a DC it becomes tombstoned and is not removed until the Garbage Collector picks it up. Although this is not the GUID, there can be some issues with the NTDS object.

http://blogs.technet.com/b/instan/archive/2011/01/12/dcdiag-and-the-not-n-sync-home-server.aspx

What ever you decides to do, you should delete the empty Server object in AD Sites & Services after the demotion and verify that DNS is not holding any references to it. (Records and references in the forward lookup zone).
0
 

Author Comment

by:jarak08
ID: 34999445
2003 server is currently 32 bit, so I can't perform an in-place upgrade.
0
 

Assisted Solution

by:jarak08
jarak08 earned 0 total points
ID: 35012931
after much googling, i found a blog which was helpful in the ordering of the steps needed:

http://msmvps.com/blogs/acefekay/archive/2010/10/09/remove-an-old-dc-and-introduce-a-new-dc-with-the-same-name-and-ip-address.aspx
0
 

Author Closing Comment

by:jarak08
ID: 35045696
I think I answered my own questions better than the one to which I am awarding points.  That solution was helpful in a general sense, but not specifically to all my questions.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

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

Resolve DNS query failed errors for Exchange
The recent Microsoft changes on update philosophy for Windows pre-10 and their impact on existing WSUS implementations.
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:…
To efficiently enable the rotation of USB drives for backups, storage pools need to be created. This way no matter which USB drive is installed, the backups will successfully write without any administrative intervention. Multiple USB devices need t…

816 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

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now