An unforgiving economic climate has left many organizations struggling to sustain (or restore) profitability. Many of them reacted to the downturn by restructuring, trimming back R&D and marketing, and laying off employees. All of these moves leave a company in a vulnerable position when the market rebounds, which it inevitably will. This white paper looks at two key ways that data center managers can improve endtoend energy efficiency: by changing the voltage of power distribution and by taking advantage of new, highefficiency, multimode uninterruptible power systems (UPSs).