1. A method of managing shared resources in a multi-computer system with failover support, the method comprising: reading priority detection signals from a computer inserted into the multiple-computer system, the priority detection signals representing a priority of the inserted computer; reading planar detection signals from the computer, the planar detection signals representing an insertion state of all computers currently inserted into the multiple-computer system; determining if the computer has the highest priority among all the computers inserted into the multiple-computer system in accordance with the priority detection signals and the planar detection signals; and in response to determining that the computer has the highest priority, monitoring shared resources and outputting a specific output signal associated with the highest priority computer, the specific output signal providing an identification of the highest priority computer to other computers currently inserted into the multiple-computer system and representing control, by the highest priority computer, of the shared resources.