Patent ID: 8627124
Filing Date: 2014-01-07
Classification: G06F,G11B,Y02D

Abstract:
1. A method for performing storage power management on storage subsystems, comprising: measuring, using a processor and a power measurement device, power consumption of a storage subsystem; calculating a first average power and a second average power for the storage subsystem based on the measured power consumption, wherein the first average power is calculated over a shorter time period than the second average power; incrementing, using the processor, one or more first actuators in response to the first average power of the storage subsystem being greater than a first power level to reduce the first average power of the storage subsystem below the first power level within a first time period; incrementing, using the processor, one or more second actuators in response to the second average power of the storage subsystem being greater than a second power level and less than the first power level to reduce the second average power of the storage subsystem below the second power level within a second time period that is greater than the first time period; decrementing, using the processor, one or more of the first actuators and the second actuators in response to the second average power of the storage subsystem being more than an offset below the second power level to increase the power consumption of the storage subsystem, wherein a responsiveness of the first actuators is faster than a responsiveness of the second actuators; and incrementing one or more of the first actuators prior to incrementing one or more of the second actuators in response to the first average power of the storage subsystem being less than the first power level and the second average power of the storage subsystem being greater than the second power level.