Re: Upgrading from NT 4.0 to Server 2003



It depends on the environment, complexity and migration method if you need a
tool or not.


If you have an NT domain called COMPANY and you want to go to AD there 2
possibilities:
(1) In-place upgrade of the NT domain to AD
(2) Install pristine AD forest/domain and migrate contents from NT domain to
AD domain

(1) In-place upgrade of the NT domain to AD
You achieve this by upgrading the NT4 PDC to a W2K3 DC. After that you have
the possibility to upgrade all other NT4 BDCs or just introduce new W2K3 DCs
and remove the old NT4 BDCs (which I prefer)
In this case the NetBIOS domain name DOES NOT change and additionally you
get a DNS name which could be COMPANY.LOCAL or COMPANY.COM. Because you only
upgraded the version of the domain, the NetBIOS name does not change and the
SID of the security principals (user, groups and computers does not change.
Therefore it is not needed to migrate stuff (users, computers and groups)
and a migration tool like ADMT is also not needed. There is nothing to
migrate to!

(2) Install pristine AD forest/domain and migrate contents from NT domain to
AD domain
You achieve this by installing a new AD forest/domain parallel to the
existing NT4 domain. The NT4 domain remains almost untouched, except for
some preparations to be able to migrate stuff (users, computers and groups).
The NetBIOS name of the AD domain MUST change. So if the NT4 domain is
called COMPANY, the NetBIOS name of the AD domain cannot be called COMPANY!
It must be something else like AD while the DNS is something like
AD.COMPANY.LOCAL.
In this case you will need a migration tool like ADMT because you will need
to migrate (or clone) users, groups and computers (SID will change because
of the cloning and you can migrate with sidhistory). Besides cloning the
computer account to the new domain you also need to change the domain
membership of the computer (only for servers and clients you want to
migrate)
ADMTv3 has been out for a while, so be sure to use that version.
(http://www.microsoft.com/downloads/details.aspx?familyid=6F86937B-533A-466D-A8E8-AFF85AD3D212&displaylang=en)


You might also wanna see:
http://blogs.dirteam.com/blogs/jorge/archive/2005/11/24/149.aspx

--
Cheers,
# Jorge de Almeida Pinto #
BLOG --> http://blogs.dirteam.com/blogs/jorge/default.aspx
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* This posting is provided "AS IS" with no warranties and confers no rights!
* Always test before implementing!
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"Abhinav" <Abhinav@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:5246EEA8-EC52-4697-AE8C-CCE47579FA8E@xxxxxxxxxxxxxxxx
> Is there any tool provided by Microsoft with the help of which we can
> migrate/transfer all the user accounts from NT based PDC to Server 2003
> Active Directory. We are planning to upgrade our Primary Domain Controller
> from NT 4.0 to Windows Server 2003. We need a tool from Microsoft with the
> help of which we can migrate all the existing user accounts on NT 4.0 PDC
> to
> the new Server 2003 Active Directory. Also, we need some tool for moving
> the
> existing user accounts in Exchange 5.5 to Exchange 2003.
>
>


.



Relevant Pages

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