| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of suitably controlling a system constructing a virtualized environment on a physical computer.SOLUTION: A computer control apparatus includes: existence monitoring means in which both corresponding systems in duplication of a physical computer and a virtualized environment mutually transmit/receive existence monitoring telegrams; mismatch determination means for determining whether or not mismatch is generated between both the systems; fault spot specification means for determining a system corresponding to a system in which an existence monitoring telegram becomes time-out in the existence monitoring means as a fault; mismatch spot specification means which when the mismatch determination means determines occurrence of mismatch, determines a system in which time starting operation as an active system is older as a fault; and state control means which when the system determined as a fault in the fault spot specification means or the mismatch spot specification means is an active system, turns the active system to a state inhibiting operation as the active system by predetermined protection processing and transits a corresponding stand-by system to an active system, and when a system determined as a fault is a stand-by system, stops the stand-by system. |
