Five years ago, the supply chain management services giant Graybar Electric began to dabble in virtualization technologies. Today, it has a large and successful virtual server and storage environment and has not added a watt to its data center in two years despite growing the infrastructure by 35%. How did they do it? In short, Graybar's success can mainly be attributed to the attitude that its infrastructure and operations (I&O) department adopted with respect to virtualization.