Abstract: In distributed computing infrastructure, even if specialized high performance server hardware might provide better performance per watt ratios, a classical server will consume more power when it is idle, it will also need more supporting infrastructure such as space, air conditioning ,and thus imposes a higher total cost of ownership(TCO) compared to mobile devices and to setup a new such infrastructure will indeed require a huge amount in terms of both economically and human resources. Every night, many smartphones are plugged into a power source for recharging the battery. Given the increasing computing capabilities of smartphones, these idle phones constitute a size able computing infrastructure. Therefore, for an enterprise which supplies its employees with smartphones, it is arguable that a computing infrastructure that leverages idle smartphones being charged overnight is an energy - efficient and cost-effective alternative to running certain tasks on traditional servers.
Keywords: Smartphone, Infrastructure, Computing.