Energy Efficient Distributed Systems for Storage-Based Applications

In order to realize digital ecosystems, the total electric power consumption of servers to perform application processes has to be reduced in information systems. Applications are classified into three types, computation, communication, and storage types of applications. In the computation and communication types of applications, CPU and communication resources of computers are mainly consumed, respectively. In this paper, we consider storage-type applications which access to storage drives like hard disk (HDD) and propose a power consumption model of a computer to performed the storage type applications. First, we measure how much electric power of a whole computer is consumed to perform application processes which access to storage drive. Then, we discuss a power consumption model of a computer to perform storage application processes by abstracting most factors dominating the power consumption of a computer from the experimental results. Here, the power consumption of a computer is maximum if at least one process is performed. The maximum power consumption depends on types concurrent processes. Otherwise, the power consumption is minimum.