Patent ID: 8205048
Filing Date: 2012-06-19
Classification: G11B

Abstract:
1. A storage system comprising: a first enclosure including a first controller and a first storage medium package which includes a plurality of first disk devices and a first fan; a second enclosure, which is coupled to said first enclosure, including a second controller and a second storage medium package which includes a plurality of second disk devices and a second fan; and a third enclosure, which is coupled to said second enclosure, including a third controller and a third storage medium package which includes a plurality of third disk devices and a third fan, wherein a state of each of said second disks is changed to a motor stopping mode when each of said second disks has not been accessed for more than a predetermined time, wherein if the state of all of said second disks is said motor stopping mode, said first controller instructs to stop power supply to said second storage medium package, and wherein if power supply to second storage medium package is stopped and said power supply to said third enclosure or said third storage medium package is stopped, said first controller controls to stop power supply to said second enclosure.