Exchange 2007 Mailbox Server Role Storage Requirements Calculator updated to v 13.0

bday: Suppose you have 35sent/15received for the average user (which is highly, highly unlikely, unless most of your "users" are spam-bots). This would equate to the 10sent/40received dropdown selection, since the transaction log volume is dictated by the average of 50 messages/day, and not a ratio of sent-to-received. If you're skeptical of your message counts like I am, run the Exchange profile analyzer (EPA) to determine daily sent/received average per user; EPA will also provide you with the average message size. If you derived your ratio using a freeware message-tracking-log-parsing tool, don't be surprised to find inaccuracies. I've seen some free 3rd party tools grossly inflate the # of sent items because they aren't intelligent enough to ignore the same message that listed multiple times in the tracking log. EPA doesn't rely on tracking logs; rather, it will login and scan messages in each mailbox to generate daily statistics (though this might be a little skewed if you choose to scan an older timeframe, since users tend to delete more items over time).