1. A computer system comprising: a processor; a composite manager operating on the processor, the composite manger comprising: a set of partial autonomic managers, operating on the processor virtualized as a single entity to collectively appear and behave as a single autonomic manager to any external entity, each partial autonomic manager adapted to perform a part of a complete autonomic loop; a module, operating on the processor, to provide a single manager interface for the set of partial autonomic managers to manage at least one entity, wherein the set of partial autonomic managers are coupled to the at least one entity being managed through the single manager interface, the module being connected to the at least one entity by a sensor and effector; and a module, operating on the processor, to provide a single manageability interface for the set of partial autonomic managers relative to any managing entity of the composite manager, wherein the set of partial autonomic managers are coupled to any managing entity managing the composite manager through the single manageability interface, the module being connected to any managing entity by another sensor and effector.