Changing Child domain from mixed to native mode

[Alberto M.]

SCENARIO:
2000 Domain with parent and child domains.
All 2000 servers in parent and child domain are in Mixed
mode.

NT4 is a PDC in the parent domain but they want to move
this to the child domain using the Active Directory
Migration Tool. In order to do this the target child
domain must be upgraded from Mixed mode to Native mode.

QUESTION: Will upgrading the target Child domain
controller to native mode cause any communications issue
with the parent domain controller which will remain in
mixed mode?

Alberto

 

[Simon Geary]

You cannot have an NT PDC in a Windows 2000 domain, do you mean that the NT
server is a BDC?

If so, then it will not be possible to migrate this server to a new domain
without completely rebuilding it. ADMT cannot help you here.

A couple more points of info: once you upgrade a domain to native mode you
cannot have any NT BDC's in the domain, and it's not domain controllers that
operate in mixed or native mode, it's the domains themselves.

 

[Jeff]

This is actually my question. Here is the sceniro:

I have a tree that consists of 3 domains, (parent and two
child domains, all mixed mode),.

I have a new company that we're trying to migrate into
one of the child domains. This company has a NT 4 domain
structure with a single domain controller. The child
domain is Win2K mixed mode. There are no other NT 4 DC's
in it.

The parent domain still has a NT 4 bdc. It is going away
later next month.

I would like to migrate the NT 4 PDC into the child
domain, (Win2K mixed mode),using the ADMT tool. What
breaks in parent domain if a child domain is native mode
and the parent is mixed mode?

Jeff

 

[Guest]

Simon,
Yes it is a BDC and thanks for quick response.

 

[Danny Sanders]

I would like to migrate the NT 4 PDC into the child

domain, (Win2K mixed mode),using the ADMT tool. What
breaks in parent domain if a child domain is native mode
and the parent is mixed mode?

Nothing.

The switch to native mode from mixed mode ONLY affects replication between
the Win 2k DC and *any* NT 4.0 BDCs in the SAME domain.

It does not affect:
Member servers in the same domain
Clients in the same domain
Trusts with Win 2k domain
Trusts with NT 4.0 domains
DCs, member servers, clients in trusted Win 2k or NT 4.0 domains
Clients, member servers, DCs in child domains
Clients, member servers, DCs, in parent domains


hth
DDS W 2k MVP MCSE

 

[Simon Geary]

Like Danny says, there is nothing wrong with having the child domain in
native mode so long as there are no NT domain controllers there. The fact
that the parent domain is in mixed mode is irrelevant.

However, what you are trying to do (migrate an NT BDC from one domain to
another) doesn't logically make sense. You can't migrate BDC's from one
domain to another.