When you drill down into the Storage Group Details in the Diagnostic Console for Exchange 2003 we can see store whitespace. In 2007 when you drill down you cannot see WhiteSpace.
Currently Spotlight on Messaging does not gathering this information about Exchange 2007 Storage
WORKAROUND:
None
Status:
Enhancement request TF00066509 has been submitted to Development for consideration in a future release of Spotlight on Messaging
