Systems, methods and media for reducing power consumption in multiple controller information handling systems

A computer-readable storage medium having computer-executable instructions for performing a method for conserving power in an information handling system (IHS) having at least two controllers to manage storage systems, the method comprising:

• assigning sets of logical unit numbers (LUNs) to each of the controllers and operating the controllers in normal power mode;
• monitoring an average queue depth of the controllers;
• determining if the average queue depth is below a predetermined low performance threshold;
• switching at least one first controller into a low power mode if the average queue depth is below the low performance threshold, wherein at least one second controller remains a normal power mode;
• and
• reassigning a first set of logical unit numbers (LUNs) to the at least one second controller when switching the at least one first controller into a low power mode.

An information handling system (IHS), having more than one controller to manage storage systems, for reducing power consumption, the system comprising:

• a plurality of disks;
• at least one first controller in communication with the plurality of disks and having a first set of logical unit numbers (LUNs) assigned to it, wherein the IHS monitors an average queue depth for the controllers and determines if the average queue depth is below a predetermined low performance threshold, and the at least one first controller is switched into a low power mode if the average queue depth is below the low performance threshold;
• and
• at least one second controller in communication with the plurality of disks, wherein the first set of logical unit numbers (LUNs) are reassigned to the at least one second controller when the at least one first controller is switched into, a low power mode.