| Forming a Cluster
If a cluster is not found during the discovery process, a system will attempt to form its own cluster. To form a cluster, the system must gain access to a quorum resource. The quorum resource is used as a tie-breaker when booting a cluster and also to protect against both nodes forming their own cluster if communication fails in a two node cluster. The quorum resource is a special resource, often, but not necessarily, a disk, that a node must arbitrate for and have possession of before it can form a cluster.
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