Logical volume group drive control

A non-transitory computer readable medium for implementing a method for conserving power, the medium including instructions, which when executed, cause an array controller to:

• store group data to organize a plurality of drive systems into a plurality of logical volume groups, each of the logical volume groups comprising a plurality of the drive systems;
• monitor activity of each of the plurality of drive systems in each of the plurality of logical volume groups to determine an aggregate status for each of the plurality of logical volume groups by aggregating statuses of each of the drive systems in a respective logical volume group;
• deactivate the plurality of drive systems of a given one of the plurality of logical volume groups to a lower power state in response to a determination based on the aggregate status for the given one of the plurality of logical volume groups that the plurality of drive systems of the given one of the plurality of logical volume groups is substantially inactive for a predetermined amount of time;
• and
• reactivate each of the plurality of drive systems associated with the given one of the plurality of logical volume groups in response to a determination that at least one of the plurality of drive systems associated with the given one of the plurality of logical volume groups is to be switched to an active state.