Patent ID: 9158666
Filing Date: 2015-10-13
Classification: G06F

Abstract:
1. A computer system comprising a physical server, a plurality of management modules, wherein at least one of the management modules is a main system module configured to manage the physical server, and a switch configured to connect the management module to an external storage device, wherein each of the management module comprises: a switching control unit configured to control the switching connection of the switch; a storage unit configured to store the management information of the computer system; and a multiplexer control unit configured to control the multiplexing of the management information in the management modules; and an external storage device control unit configured to control the external storage device, wherein, in a case where the computer system comprises a first management module whose state is the main system and a second management module whose state is standby, the switching control unit for the first management module is configured to control the switch to connect the first management module to the external storage device, after a management information in the storage unit of the first management module is updated in response to an update of a management information stored in the server module, the external storage device control unit and the multiplexer control unit for the first management module control are configured to store the updated management information stored in the storage unit for the first management module, into the external storage device and the storage unit for the second management module, when at least one of the first management module and the second management module fails and a third management module is added as an alternative management module of the failed management module, the multiplexer control unit of the third management module is configured to: