What are cluster configurations?

What are cluster configurations?

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Server clusters using the Cluster service can be set up as one of the following three different cluster configurations:

1. Single Node server clusters: They can be configured with or without external cluster storage devices. For Single Node server clusters without an external cluster storage device, the local disk is configured as the cluster storage device.


2. Single Quorum Device server clusters: They can have two or more nodes and are so configured as to attach every node to one or more shared storage devices, such as an external array of Small Computer System Interface (SCSI) disks. The cluster configuration data is stored on a single cluster storage device, also known as the quorum disk.


3. Majority Node Set server clusters: They can have two or more nodes, but nodes might not be attached to one or more cluster storage devices. The cluster configuration data is stored on multiple disks across the cluster, and the Cluster service guarantees that this data is kept consistent across the disks.

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