Patent ID: 7925817
Filing Date: 2011-04-12
Classification: G06F

Abstract:
1. A computer system comprising: a plurality of servers each comprising a processor, a memory, and an interface; a PCI switch coupled to the plurality of servers via the interfaces; an I/O device coupled to the PCI switch; and a management block for managing a configuration of the PCI switch, wherein: the management block comprises: the switch management block is configured to: wherein the host management block instructs, after the second access path is set, the standby server to make access to the fourth virtual bridge coupled to the I/O device, used by the active server which the standby server takes over, the standby server makes access to the fourth virtual bridge coupled to the I/O device, used by the active server which the standby server takes over, according to the instruction from the host management block, and the host management block receives access results from the standby server, and determines, when the access results indicates a failure, that the standby server cannot take over the active server.