An Adaptive Energy-Conserving Strategy for Parallel Disk Systems

In the past decade parallel disk systems have been highly scalable and able to alleviate the problem of disk I/O bottleneck, thereby being widely used to support a wide range of data- intensive applications. Optimizing energy consumption in parallel disk systems has strong impacts on the cost of backup power-generation and cooling equipment, because a significant fraction of the operation cost of data centres is due to energy consumption and cooling. Although a variety of parallel disk systems were developed to achieve high performance and energy efficiency, most existing parallel disk systems lack an adaptive way to conserve energy in dynamically changing workload conditions. To solve this problem, we develop an adaptive energy-conserving algorithm, or DCAPS, for parallel disk systems using the dynamic voltage scaling technique that dynamically choose the most appropriate voltage supplies for parallel disks while guaranteeing specified performance (i.e., desired response times) for d...

• Type: Conference
• Year: 2008
• Where: DSRT
• Authors: Mais Nijim, Adam Manzanares, Xiao Qin
• Keywords: Decade Parallel Disk, DSRT 2008, Energy Consumption, Modelling And Simulation, Parallel Disk Systems