Managing a node cluster

Details Managing a node cluster Managing a node cluster

2008-01-29

2010-11-23

Chu, Gabriel L (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C709S223000

Reexamination Certificate

active

07840833

ABSTRACT:
A system for managing a cluster of nodes, the cluster comprising a plurality of groups of nodes, each node being associated with a vote, the system further comprising an arbitration device, the arbitration device being associated with a number of votes dependent on the number of nodes in the cluster, each node further being associated with a cluster manager, one of the cluster managers for each group being operable: if the group is in communication with the arbitration device, to determine whether the group has the greatest number of votes, including the votes of the arbitration device; if the arbitration device is operative, but the group is not in communication with the arbitration device, to determine whether the group meets the quorum without adjusting the quorum; and if the arbitration device is not operative, to determine whether the group meets the quorum after adjusting the quorum.

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