Patent ID: 8695107

Claim:
An information processing device comprises: a plurality of processing devices, each of the plurality of processing devices comprising: a hardware resource that includes an arithmetic processing unit and a memory; a security unit that performs encrypting processing of data in the hardware resource for securing a security of the hardware resource; and a system control device that sets at least two processing devices among the plurality of processing device to same partition and reserves the other processing device so as to operate instead of the one processing device of the plurality of processing devices that has occurred a failure in the same partition, wherein each of the plurality processing devices further comprises an exclusive control unit that exclusively controls a setting for make the security unit to be valid according to a notification of reservation information whether the other processing device was reserved from the system control device, and wherein the one processing device notifies an information that set the security unit as the valid to the system control device when setting that the security unit is valid before a reservation of the other processing unit and, the system control device inhibits to set the reservation of the other processing device.