Cloud Computing = Green IT … Right?!
We all know that green IT can only be built with cloud technology. It is common sense. Fewer physical servers means less energy, means green. Right? Not exactly. But a common assumption, even in the green IT community, is that cloud computing is the only way to achieve green IT. This is, at least on the surface, true, but the reverse is not: Cloud computing is not always green. Let me explain.
The green of IT regularly garners headlines. Some examples from the past year are Facebook’s Open Compute Project Initiative, Google’s Solar initiatives and Ivanpah Solar Electric Generating System (“largest solar energy project in the world"), with more that $168 million invested. Other examples are Yahoo’s Chicken Coop Data Center Design: a 155,000-square-foot data center, which can accommodate 50,000 servers, is cooled almost 100 percent by outside air (in contrast to the large power-hungry chillers in most data centers) and uses 40 percent less energy than typical data centers…

