Quorum-based power-down of unresponsive servers in a...

Details Quorum-based power-down of unresponsive servers in a... Quorum-based power-down of unresponsive servers in a...

2011-03-15

2011-03-15

Robinson, Greta L (Department: 2169)

Data processing: database and file management or data structures

File or database maintenance

Database recovery

C707S610000, C707S737000, C707S955000, C709S201000, C709S223000, C709S249000, C713S310000, C713S324000

Reexamination Certificate

active

07908251

ABSTRACT:
A quorum-based server power-down mechanism allows a manager in a computer cluster to power-down unresponsive servers in a manner that assures that an unresponsive server does not become responsive again. In order for a manager in a cluster to power down servers in the cluster, the cluster must have quorum, meaning that a majority of the computers in the cluster must be responsive. If the cluster has quorum, and if the manager server did not fail, the manager causes the failed server(s) to be powered down. If the manager server did fail, the new manager causes all unresponsive servers in the cluster to be powered down. If the power-down is successful, the resources on the failed server(s) may be failed over to other servers in the cluster that were not powered down. If the power-down is not successful, the cluster is disabled.

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