Patent ID: 8516204
Filing Date: 2013-08-20
Classification: G06F,Y02D

Abstract:
1. A storage system, comprising: a control device electronically coupled to a host computer and a plurality of disk drives configured as a plurality of redundant array of independent disks (RAID) groups, wherein the control device is configured to: wherein if the control device receives a write command to the third logical volume from the host computer, the control device is configured to identify the certain second logical volume and the another second logical volume in the third logical volume in response to the write command, and to switch the certain second logical volume, corresponding to the first logical volume on the mapping relation, to the another certain second logical volume of the plurality of second logical volumes, and in response to the switching the control device is configured to rotate a first plurality of disk drives configured as a first RAID group to which the other certain second logical volume belongs and stop motors of a second plurality of disk drives configured as a second RAID group to which the certain second logical volume belongs.