The paradigm for the modern enterprise data center, which has served businesses admirably for many years, is looking increasingly brittle. The strains posed by disruptive technological innovations and ever-changing service demands required by business units, coupled with budgetary pressures as well as increasing requirements for security, resiliency, and performance have pushed the data center quite literally to the breaking point. Like a juggler with too many balls in the air at one time, today's data center executive feels like he or she can barely manage to keep a data center running, much less develop a vision for tomorrow's data center architecture. ...