Computer system with dynamically configurable capacity

A system, comprising:

• a capacity-on-demand server;
• and
• a computer system communicatively coupled to the capacity-on-demand server, the computer system comprising:
• a plurality of field replaceable units (FRUs) for supplying processing resources, each of the plurality of FRUs having a field replaceable unit identification (FRUID) memory adapted store a capacity-on-demand (COD) indication associated with the FRU, the COD indication indicative of whether the FRU is a base level resource or a COD resource;
• and
• a system controller configured to access the FRUID memory of each of the plurality of FRUs to detect the COD indication, wherein the system controller is configured to enable at least those of the plurality of FRUs for which the corresponding COD indication indicates that the FRU is a base level resource, and further configured to identify a need for additional processing resources, and wherein the system controller is configured to transmit a request for additional processing resources to the capacity-on-demand server and to receive an authorization message from the capacity-on-demand server responsive to the request, and wherein the system controller is configured to enable additional ones of the plurality of FRUs responsive to the authorization message.