System and method for aggressively budgetting power allocation for an information handling system using redundant configuration of power supply units

An information handling system for budgeting power allocation, the information handling system comprising:

• at least one processor that executes program code;
• and
• a power controller communicatively coupled to the at least one processor and to other components within the information handling system and which includes firmware that executes on a microprocessor of the power controller to configure the power controller to:
• in response to determining that the information handling system is to be powered by a redundant configuration of two or more PSUs including a primary PSU and a secondary PSU, budget a first amount of power for the system that is less than a maximum power that can be utilized by the system and configure the system to autonomously utilize unused operating margins of reserve power from the redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power;
• wherein the first amount of power is a thermal design power (TDP) of the system that does not exceed the output of the primary PSU, wherein the power transients are removed from direct consideration during PSU right sizing for the system when the information handling system is to be powered by a redundant PSU configuration;
• and
• in response to determining that the information handling system is not to be, or is no longer being, powered by a redundant configuration of two or more PSUs, budget a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system, and which does not exceed the output of the primary PSU.

A non-transitory machine-readable storage device embodying machine-executable instructions configured for:

• determining whether an information handling system is to be powered by a redundant configuration of multiple power supply units (PSUs) including a primary PSU and a secondary PSU;
• in response to determining that the information handling system is to be powered by a redundant configuration of multiple PSUs, budgeting a first amount of power for the system that is less than a maximum power that can be utilized by the system and configuring the system to autonomously utilize unused operating margins of reserve power from the redundant configuration of the PSUs during periods in which the system requires greater than the first amount of power;
• wherein the first amount of power is a thermal design power (TDP) of the system that does not exceed the output of the primary PSU, wherein the power transients are removed from direct consideration during PSU right sizing for the system when the information handling system is to be powered by a redundant PSU configuration;
• and
• in response to determining that the information handling system is to be powered by a non-redundant configuration of multiple PSUs, budgeting a second amount of power for the system that is at least equal to the maximum power that can be utilized by the system, and which does not exceed the output of the primary PSU.