Patent ID: 7062676
Filing Date: 2006-06-13
Classification: G06F

Abstract:
1. A failover cluster system which comprises a first computer and second computer that are mutual objects of failover, and which causes failover to be executed on the basis of the state of heartbeat signal communications performed between said first computer and said second computer, wherein said first computer comprises: a first failover component which actuates failover by said second computer by voluntarily stopping said heartbeat signal communications on the basis of a heartbeat communications stop request that is issued prior to the installation of an OS construction altering program from an installation program that performs preparations for the installation of said construction altering program; and an installation control component which starts an installer program and causes said construction altering program to be installed by restarting said OS when a restart signal based on the stopping of said heartbeat signals is received from said second computer; said first failover component requests said second computer for failback when the installation of said construction altering program is completed; said second computer comprises: a second failover component which executes said failover when said heartbeat signal communications with said first computer are stopped; and a restart request component which transmits said restart signal to said first computer when said heartbeat signal communications with said first computer are stopped; and said second failover component stops the execution of said failover when said failback is requested from said first computer.