Exchange 2010/2013 Server Role Requirements Calculator
Authored by Ross Smith IV and David Mosier (with contributions from Jeff Mealiffe, Matt Gossage, Neil Johnson, and Jon Gollogly), Exchange 2010/2013 Server Role Requirements Calculator is the de facto tool for sizing recommendations for your Exchange server roles (both client access and mailbox). Note: The 2010 version of the tool is focused on mailbox calculations. The 2013 calculator is an Excel spreadsheet with multiple tabs to assist with mapping out backup requirements, role requirements, storage design, and more. Enter your system values into the Input tab and let the calculator go to work. It may take you a while to accurately provide the input, but the calculator’s output across the various sheets is gold.