Exchange 2003 Information Store Limit 75GB

Date November 11, 2006 Author By kadmin Category Microsoft Exchange

The information store in Exchange 2003 Standard Edition is limited to 16GB of storage.  If you upgrade to SP2, that limit increases to 75 GB.  Microsoft finally realized that 16GB is to small for even an office of 10 people.

But there’s a catch.  The limit stays at 18GB unless you manually put in a registry entry to change it.  That wasn’t mentioned when I downloaded SP2.

Open Regedit and go here:

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesMSExchangeIS<Servername>Private-GUID

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesMSExchangeIS<Servername>Public-GUID

Create a DWORD value called “Database Size Limit in GB”

Give it a Decimal Value between 18 and 75.

Just make sure you don’t set it higher than your free disk space.

Restart the information store service for the change to take effect.

Check the Application event log for Event 1216 and confirm the correct Store Limit.