Patent ID: 7953909
Filing Date: 2011-05-31
Classification: G06F,Y02D

Abstract:
1. A storage system comprising: a first interface coupled to a computer; a second interface coupled to a management console; a plurality of disk devices storing data sent from said computer and configuring a plurality of Redundant Array of Disks (RAID) groups, said RAID groups on which a plurality of logical units are prepared; and a controller which is adapted to receive a spin down instruction which instructs to spin down disk devices included in a RAID group in said RAID groups from said management console, then monitor an I/O command which specifies a logical unit prepared on said RAID group within a fixed period of time from when receiving said spin down instruction from the management console, and then execute spin down for said disk devices included in said RAID group in case that said monitored I/O command is not detected within said fixed period of time from when receiving said spin down instruction from the management console.