Patent ID: 6789213
Filing Date: 2004-09-07
Classification: G06F

Abstract:
A method for taking over services by one or more remaining sub-clusters of a clustered computing system from one or more other sub-clusters of the clustered computing system after the one or more other sub-clusters have been shutdown, said method comprising:(a) attempting to determine whether a sub-cluster of the clustered computing system is to remain active such that the processes of the sub-cluster may temporarily continue; (b) initiating shutdown of the sub-cluster when said attempting (a) does not determine within a first predetermined amount of time that the sub-cluster is to remain active; (c) to allow the processors of the sub-cluster to temporarily continue, delaying for a second predetermined amount of time after the first predetermined amount of time expires when said attempting (a) determines within the first predetermined amount of time that the sub-cluster is to remain active such that data corruption is avoided; and (d) taking over services of one or more other sub-clusters of the clustered computing system by one or more remaining sub-clusters after said delaying (c) for the second predetermined amount of time.