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Sun™ Cluster Environment: Sun Cluster 2.2 by David Deeths, Ph.D. Joseph Bianco, Enrigue Vargas

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SC2.2 Failure Fencing/Cluster Membership

Failure fencing is a term used to indicate how shared data is protected in the event of a failure within the cluster. For example, if the interconnect fails or a node leaves the cluster unexpectedly, the cluster framework must ensure that the non-cluster nodes do not have access to shared storage. Locking out non-cluster members from shared storage removes the possibility of data corruption (and also prevents multiple clusters from forming).

Note

This section explains failure fencing scenarios for node failures; however, the same mechanisms are used during routine SC2.2 operations (such as when a node joins or leaves the cluster).

Failure fencing should not be confused with cluster membership because ...

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