Reducing Power Consumption of a Redundant Power System Utilizing Sleep Power Consumption Considerations for Power Supply Units Within the Redundant Power System

A system for reducing power consumption, the system comprising:

• a redundant power system having a plurality of power supply units (PSUs) supplying power to a load;
• and
• a PSU selector communicatively coupled to at least two of the plurality of the PSUs, and configured to selectively disable at least one PSU from the plurality of PSUs in order to reduce system power consumption in connection with supplying power to the load, wherein the PSU selector:
• receives operational data for each PSU, including a current load rating, efficiency data for a set of load ratings, and sleep power consumption data;
• computes a system power consumption for each of a plurality of configurations, where at least one different PSU is hypothetically disabled from supplying power while each remaining PSU is hypothetically enabled to supply power required for the load, each computation taking into consideration the sleep power consumption data of the hypothetically disabled at least one PSU;
• compares a resulting plurality of computed system power consumptions to identify which specific configuration of the plurality of configurations yields a lowest system power consumption;
• and
• in response to a determination that system power consumption can be reduced by implementing the specific configuration while providing a required supply power to the load, implements the specific configuration of the PSUs within the RPS, wherein the at least one PSU is disabled, while the remaining PSUs are enabled.

An information handling system comprising:

• a processor;
• a power system having a plurality of power supply units (PSUs) operated to supply power to the information handling system and a power management controller (PMC) communicatively coupled to the processor;
• and
• a memory having power management code which, when executed by the processor, causes the processor to configure the PMC to selectively disable at least one PSU from the plurality of PSUs in order to reduce system power consumption in connection with supplying power to the information handling system, wherein the processor operates in tandem with the PMC to:
• receive operational data for each PSU, including a current load rating, efficiency data for a set of load ratings, and sleep power consumption data;
• compute a system power consumption for each of a plurality of configurations, where at least one different PSU is hypothetically disabled from supplying power while each remaining PSU is hypothetically enabled to supply power required for the load, each computation taking into consideration the sleep power consumption data of the hypothetically disabled at least one PSU;
• compare a resulting plurality of computed system power consumptions to identify which specific configuration of the plurality of configurations yields a lowest system power consumption;
• and
• in response to a determination that system power consumption can be reduced by implementing the specific configuration while providing a required supply power to the load, implement the specific configuration of the PSUs within the RPS, wherein the at least one PSU is disabled, while the remaining PSUs are enabled.