Solid State Disk (SSD) Management for Reducing Disk Energy Consumption in Video Servers

초록

Abstract—A promising approach to reducing disk energy consumption is to use multi-speed disks with lower rotational speeds, and allowing disks to run slowly when workloads are light can reduce their large contribution to the power used by video servers. We propose an SSD cache management scheme for video servers which use multi-speed disks. We formulate an integer linear problem (ILP) that determines videos cached on the SSD with the aim of minimizing overall disk energy consumption. Simulations show that our caching scheme allows disks to run at lower speeds, which saves disk energy consumption greatly.