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Cluster Witness

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Applies To: Windows Server 2008 R2

Failover clusters with an even number of nodes usually use a quorum configuration that includes a "witness disk" or "witness file share." In a cluster with an even number of nodes and a quorum configuration that includes a witness, when the witness remains online, the cluster can continue sustain failures of half the nodes. If the witness goes offline, the same cluster can sustain failures of half the nodes minus one.

Aspects

The following is a list of all aspects that are part of this managed entity:

Name Description

Cluster Witness Functionality

In a cluster with an even number of nodes and a quorum configuration that includes a witness, when the witness remains online, the cluster can sustain failures of half the nodes. If the witness goes offline, the same cluster can sustain failures of half the nodes minus one.

Failover Clustering