  In recent years, efficient energy utilization becomes an essential
requirement for data centers, especially in data centers of world-leading
companies, where "Green Data Center" defines a new term for an
environment-concerned data center. Solutions to change existing a data center
to the green one may vary. In the big company, high-cost approaches including
re-planning server rooms, changing air-conditioners, buying low-powered
servers, and equipping sophisticating environmental control equipments are
possible, but not for small to medium enterprises (SMEs) and academic sectors
which have limited budget. In this paper, we propose a novel system, SENVM,
used to monitor and control air temperature in a server room to be in
appropriate condition, not too cold, where very unnecessary cooling leads to
unnecessary extra electricity expenses, and also inefficient in energy
utilization. With implementing on an emerging technology, Wireless Sensor
Network (WSN), Green Data Center is feasible to every small data center with no
wiring installation, easy deployment, and low maintenance fee. In addition, the
prototype of the system has been tested, and the first phase of the project is
deployed in a real-world data center.
