Patent ID: 8423816
Filing Date: 2013-04-16
Classification: G06F

Abstract:
1. A failover method for use with a computer system in which an operating system is booted by an external disk device, wherein plural servers are connected via a network to the external disk device, each of the servers incorporates therein a logic partition module for configuring at least one logic partition in each server, and a task being executed by a working server in the computer system is taken over by a standby server in the computer system when a failure occurs in the working server, wherein the logic partition module includes a processing unit which is configured to re-locate a logic partition during execution of the logic partition and failure operation information indicating a failure operation in response to a type of failure, the method comprising: a step of detecting the failure that has occurred in the working server; a step of specifying the location of the failure; a step of specifying the logic partition that is affected by the failure, depending on the specified failure location; a step of searching for a standby server for taking over the task from the working server in which the failure occurred; a step of configuring in the standby server a logic partition equivalent to the logic partition affected by the failure while continuously executing tasks in other logic partitions which are not affected by the failure; and a step of configuring in the standby server logic partitions equivalent to said other logic partitions which are not affected by the failure while continuously executing the tasks in said other logic partitions.