Method and apparatus for assigning storage resources to a power saving target storage pool based on either access frequency or power consumption

摘要

The present invention achieves appropriate power saving of the storage systems in accordance with the user's needs. In a storage system 1 including a storage apparatus 10 comprising a thin provisioning function and a management device 20, the management device 20 receives specification of a storage pool 93 as a power saving target and the specification of a power saving mode from a user and, when receiving the specification of prioritizing host access, selects the storage resource (RAID group 92) allocated to the storage pool 93 preferentially in ascending order of access frequency from the host computer 30 until a sum of a reduced amount of power saving exceeds the target value or, when receiving the specification of prioritizing power saving, selects the storage resources allocated to the storage pool 93 preferentially in descending order of power consumption until a sum of a reduced amount of power consumption exceeds a target value, and makes the power saving function of the selected storage resources operate.