Patent ID: 7305578
Filing Date: 2007-12-04
Classification: G06F

Abstract:
1. A failover method for a clustered computer system including an active computer, a plurality of computers which could be standby computers to take over a procedure of said active computer, and a disk drive which is coupled to these computers and stores a file required for an application to execute the procedure of said active computer, said method comprising the steps of: determining a standby computer which is supposed to take over a procedure, with the fact that occurrence of a failure is detected in said active computer as being a first trigger, and notifying the determined computer; allowing the notified computer to execute the takeover preparation procedure; and allowing the computer which executed said takeover preparation procedure to take over a procedure that was executed by said active computer, with the fact that a failover procedure becomes necessary due to the failure in said active computer as being a second trigger.