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BlogCast: Removing an Orphan ntdsDSA Object from Active Directory

I’ve finally been persuaded to record my own blogcast instead of persuading Ewan to talk for me.  I’ve been asking my colleagues in the product team if they’d like to do some blogcasts, and they've told me that they'd be glad to – but only after I've actually recorded one!   So here it is…

 

I used the settings that John Howard blogged about to get the file size down.  I've created a 4 minute blogcast and the file size is 400k (thanks John!).  John has done several blogcasts with incredibly low file sizes...

 

This topic today is how to remove an orphaned server from Active Directory by using the ntdsutil metadata cleanup utility.  Metadata cleanup allows you to remove the NTDS settings object of the failed server.  This utility allows you to replace a failed Exchange server in your organisation with another server and use the same name as the failed server.  This is really useful in disaster recovery scenarios.  it's a bit of a dry subject though, and the demo is all in the command prompt - but it's important all the same.  I now need to think of something more zingy for my next one! Exchange database maintanance.  Now that will get you going! 

 

There are links to other blogcasts here

 

Published Tuesday, February 01, 2005 5:28 PM by Eileen_Brown
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Comments

Tuesday, February 01, 2005 1:01 PM by Rod Trent at myITforum.com

# Eileen Brown's first BlogCast

Friday, February 11, 2005 9:21 PM by Jeff

# re: BlogCast: Removing an Orphan ntdsDSA Object from Active Directory

I'm confused as to why I would be using this procedure in a disaster recovery scenario. Normally, I would want to run Exchange setup with the /disasterrecovery switch so I can pull the old config out of AD. Can you please explain further?

On another note, I really love these BlogCasts. Thank you and keep 'em coming!
Friday, February 11, 2005 10:18 PM by Eileen Brown

# re: BlogCast: Removing an Orphan ntdsDSA Object from Active Directory

Jeff,
You need to use metadata cleanup if you want to re-use exactly the same name for the DC when you restore through re-installation. You have to remove the ntdsDSA object of the failed DC using ntdsutil and the metadata cleanup command. Then you install Exchange using the /Disasterrecovery switch. You need to use ntdsutil to clean up the metadata to ensure that you can reuse the same name for the DC again. Have a look at http://www.petri.co.il/delete_failed_dcs_from_ad.htm and http://support.microsoft.com/default.aspx?scid=kb;en-us;216498 for more info.

Thank you very much for your encouraging words about the BlogCasts have you any ideas for any more that we can do?

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