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When do I move to native mode from mixed mode

Posted on 2004-04-08
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Last Modified: 2010-04-19
In Jan. we upgraded our domain from nt4 to AD.

I upgraded the existing PDC to server 2003 and built 3 new boxes to replace our old BDC's. We no longer have any NT4 BDC's on the network.

Now , I am going to install Exchange 2003 onto a new box to replace our old Exchange 5.5 server and eveything I have been reading says you should be in native mode before you begin your migration.

Will moving to native mode break my existing Exchange 5.5 box? Can both a Exhange 5.5 and a 2003 server live in Native mode while I do the migration?

Any help would be great.



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Question by:steverib
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Lots of good info on this topic..  But ck this out for starters..  (Basically, leave you DC's in mixed until you do the upgrade..)

http://support.microsoft.com/default.aspx?scid=kb;en-us;327779

An organization running in mixed mode can accommodate all versions of Microsoft Exchange. By default, Exchange 2000 and Exchange 2003 is installed in mixed mode.

Exchange 2000 and Exchange 2003 running in mixed mode is subject to the following limitations:
Exchange Server 5.0 and 5.5 sites are mapped directly to administrative groups.
Administrative groups are mapped directly to Exchange Server 5.0 and 5.5 sites.
Servers cannot be moved between administrative groups.
Routing group membership consists only of servers that are installed in the administrative groups.

A lot of info on moving from E 5.5 to 2K+..  and the switch from Mixed to Native...

http://www.experts-exchange.com/Networking/Email_Groupware/Exchange_Server/Q_20896933.html
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This article describes how to prepare an Exchange 2000 or an Exchange 2003 organization that is currently running in Mixed Mode for conversion to Native Mode. These steps should be performed after the last Exchange 5.5 server in the organization is upgraded, or before the last server is decommissioned.

http://support.microsoft.com/default.aspx?scid=kb;EN-US;272314
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by:steverib
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Thanks for the help.

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by:Fatal_Exception
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No problem...  Goog luck...!!

and thank you..

FE
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