Techniques for Enhancing Energy Efficiency of Storage System using Dynamic Power Management

초록

Traditional dynamic power management (DPM) method makes power-moderated decisions based on the information available at runtime (online) or before (offline). This paper proposes energy-aware RAID scheduling methods to reduce energy consumption for storage applications using online DPM for data disks and offline DPM for parity disks. The proposed DPM strips data and parity blocks and switches the power mode from active to idle or standby while storage applications are not performing any physical I/O operations. Experimental results show that the proposed storage application reduces average energy consumption by 27-36% compared to existing storage applications.