An emerging class of extremely low-power servers is helping Internet companies and hosting providers to slash their energy bills, and proponents say they could have a role in the enterprise as well. The servers, offered by established players such as Dell and SGI as well as start-ups such as SeaMicro, cut power use by reducing server components to a minimum, aggregating fans and power supplies across several servers, and employing low-power processors normally used in netbooks and other mobile devices, such as Via’s Nano processor and Intel’s Atom chip . Examples include Dell’s “Fortuna” server, which crams 12 mini servers based on Via Nano processors into a 2U chassis. It’s a fully functioning server with its own storage, memory, management controller and dual 1GbE cards, but each server consumes less than 30 watts of power at full load — far less than a typical server of the same size.






