Dennis P. DeCoster is executive principal at Mission Critical West, Inc., a California corporation providing high criticality facilities infrastructure design, consulting, and commissioning services. He has over 25 years in the UPS industry and has consulted for a host of Fortune 500 firms. DeCoster has authored articles on UPS and data center storage technologies for numerous magazines and presented papers at several major conferences. He is also the principal author of the hallmark Large UPS Report, an evaluation and comparison of major UPS manufacturers. He can be reached by email for questions or comments at dd@mcwestinc.com or at www.mcwestinc.com on the net.