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Difference between Setup.exe and Setup.com in Exchange 2007 installation

What is the difference between Setup.exe and Setup.com in Exchange 2007 installation?
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advserver
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setup.com is used for all pre work. please see this article, basically it calls different backend procedures.
http://www.msexchange.org/tutorials/Transitioning-Exchange-2000-2003-Exchange-Server-2007-Part1.html
also this article will explain it. strangely enough if you have to do a disaster recovery you fully use setup.com to reinstall all ex2k7 roles.

http://technet.microsoft.com/en-us/library/aa996719.aspx
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nkulsh

ASKER

Thanks for quick response. Actually, I have gone over all 3 articles of Henrik Walther about Exchange 2007 -- and 3 articles on Cluster installation as well.

Does setup.com install all requisite components and then installs Exchange 2007 as well?
What if one stats with setup.exe?
(I don't have access to Exchange 2007 CD or DVD at this time.)

Jay
you need setup.com to prep the forest and domain and the legacy exchange permissions
but if all that is done, setup.exe will do the install.
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ASKER

Henrik Walther, in his 3 Exchange 2007 articles, does as you suggest. However, in his similar 3 articles about installing Exchange 2007 in a Cluster, he initiates Exchange installation also with setup.com file which makes me think setup.com is all-encompassing.

Could the role of two setup files be different for clusters?
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advserver
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