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How to migrate a Windows 2003 file server to another domain?

Posted on 2011-02-20
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Last Modified: 2012-05-11
Hi,

I have a Windows 2003 file server from DomainA and I want to move it into DomainB. What is the proceadure for doing  that to make sure that all folders and files securities will follow?
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Question by:SAM2009
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holthd earned 668 total points
ID: 34940493
There are no ways of migrating a server and retaining the filesystem NTFS permissions (usable) to my knowledge. There are several ways to get keep the permissions but unless you have a 1:1 copy of the Active Directory securtiy groups and users in domain A and B they'll be no good to you.
All objects in Active Directory have a SID which is unique and is the actual reference used when performing lookups from the fileserver to the domain. To maintain the SIDs of the objects you must have a copy of all the users and/or security groups that has been granted access to the filesystem in Domain A in Domain B. It does not help to give the objects an identical name and put them in the identical containers.
I recommend you use XCACLS.vbs (Microsoft, free) to export all permissions to a text file and re-establish the filesystem ACL's in Domain B.

-Daniel  
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by:Lee W, MVP
ID: 34940525
If there is a trust between the domains then the NTFS permissions should remain in-tact (TEST FIRST).
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by:abolinhas
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by:pedronrivera
pedronrivera earned 664 total points
ID: 34944223
For migrations I use admt which will migrate users groups and computer accounts.  Do some research on the active directory migration tool.
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by:SAM2009
ID: 34945488
The trust is activated between both domains. Whatd does it work with fsmigrate? Does it keep the security grp and users?
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Expert Comment

by:Lee W, MVP
ID: 34945507
If there's a trust, then the GUIDs (which are NOT removed) can be looked up and security should apply properly.
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Expert Comment

by:holthd
ID: 34946758
Keep in mind that once you remove the trust or the DC's in the trusted domain becomes unavailable ACL lookups on this server cannot be performed any longer. Hence rendering files and folders inaccessible.
If the trust is used in a transition period you'll have to look at AD migration or another solution.
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Author Comment

by:SAM2009
ID: 34948117
Ya trust will be deactivated cuz the purpose is to get just one domain at the end.
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Author Closing Comment

by:SAM2009
ID: 34967278
Thank you for all your suggestions!
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