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Upgrade Exchange from 2000 to 2003

Posted on 2006-06-18
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Last Modified: 2010-03-06
I will be replacing our existing exchange server (A) running windows 2000 SP4 and Exchange 2000 with a brand new server (B) running Windows 2003 and Exchange 2003.

What steps should I take to run a sucessful upgrade with minimal down time?

Is there a wizard that assists with the transfer from servers A to B?

Will I need to install Exchange 2000 on server B, import the data then upgrade to 2003?


Thanks
Priscilla
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Question by:Priscilla_Hora
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Lee W, MVP earned 500 total points
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by:smeek
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The first link from leew is it.  On the Exchange CD is also a wizard exdeploy.hta that steps you through it.  You should be able to accomplish with minimal downtime, depending on user counts and network complexity.

Basically, you set up new server installed into the existing Exchange org.  You can then see both servers and receive email.  TO move mail to new server, use the Move Mailbox utility.  I usually set up a test mailbox on new server on new server, then move small group, then move en masse (you can schedule using the Move Mailbox utility).  

Once everything is moved, leave old server up for week or two (I do to catch people on vacation or traveling).  Outlook clients that used to point to old server will check in and automatically point to new server.  Once you feel everything has move, decommision your original server following http://support.microsoft.com/default.aspx?scid=kb;en-us;307917.

Steve  
 
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