Patent ID: 8285911
Filing Date: 2012-10-09
Classification: G06F

Abstract:
1. A computer apparatus comprising: a plurality of computer modules including processing devices; an I/O adapter; a switch including an upstream port connected to the computer modules and a downstream port connected to the I/O adapter; and a PCI manager, wherein the switch includes a virtual switch logically connecting the upstream port and the downstream port, and stores a first identifier logically identifying a connection path between a computer module in an operating state and a first virtual switch and a second identifier logically identifying a connection path between the first virtual switch and the I/O adapter, wherein when the computer module in the operating state moves to a non-operating state, the PCI manager detecting the non-operating state issues an update instruction of the identifiers to the switch, wherein the switch that received the update instruction of the identifiers carries over the first identifier to a third identifier logically identifying a connection path between a computer module in a standby state and a second virtual switch, and carries over the second identifier to a fourth identifier identifying a connection path between the second virtual switch and the I/O adapter, and wherein the computer module in the standby state moves to the operating state after the carryovers of the identifiers.