Methods and apparatus to manage workload domains in virtual server racks

An apparatus comprising:

• memory;
• and
• processor circuitry to execute computer readable instructions to:
• determine whether an availability selection corresponds to (A) a first resource allocation technique when a number of available physical racks satisfies a threshold number of physical racks or (B) a second resource allocation technique different than the first resource allocation technique when the number of physical racks does not satisfy the threshold number of physical racks, the first resource allocation technique includes reserving requested resources by utilization of first available resources of a first physical rack and utilization of at least one of second available resources of a second physical rack, the second resource allocation technique includes reservation of the requested resources via a portion of the first available resources of the first physical rack without utilization of all of the first available resources and using a portion of the second available resources of the second physical rack without utilizing all of the second available resources;
• apply the first resource allocation technique based on the availability selection that corresponds to the first resource allocation technique;
• apply the second resource allocation technique based on the availability selection corresponding to the second resource allocation technique;
• determine that the availability selection corresponds to the second resource allocation;
• and
• execute one or more workload domains associated with a number of requested resources in accordance with the second resource allocation technique using a number of placement solutions concurrently within a finite pool of shared configuration resources based on user-selected availability, performance, and capacity options.

A method comprising:

• determine whether an availability selection corresponds to (A) a first resource allocation technique when a number of available physical racks satisfies a threshold number of physical racks or (B) a second resource allocation technique different than the first resource allocation technique when the number of physical racks does not satisfy the threshold number of physical racks, the first resource allocation technique includes reserving requested resources by utilization of first available resources of a first physical rack and utilization of at least one of second available resources of a second physical rack, the second resource allocation technique includes reservation of the requested resources via a portion of the first available resources of the first physical rack without utilization of all of the first available resources and using a portion of the second available resources of the second physical rack without utilizing all of the second available resources;
• apply the first resource allocation technique based on the availability selection that corresponds to the first resource allocation technique;
• apply the second resource allocation technique based on the availability selection corresponding to the second resource allocation technique;
• and
• determine that the availability selection corresponds to the second resource allocation;
• and
• execute one or more workload domains associated with a number of requested resources in accordance with the applied second resource allocation technique using a number of placement solutions concurrently within a finite pool of shared configuration resources based on user-selected availability, performance, and capacity options.