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Exchange 2003 Information Store Size

USAF_ADMIN
USAF_ADMIN asked
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Last Modified: 2012-06-27
I am currently in the process of upgrading from Exchange 5.5 to Exchange 2003, I finally am down to the last stages of the upgrade, but I've ran into a major problem.  In Exchange 5.5 our database is only about 3 to 4 gig in size (we only have 150 users).  Well when I ran the Migration wizard, it made the Exchange 2003 database 17 gig in size?!?!

How did this happen?
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Also maybe attempt an offline defrag.

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