what is a node in a cluster
Nodes. A server cluster node is a system that has a working installation of Windows Server 2003, Enterprise Edition or Windows Server 2003, Datacenter Edition and the Cluster service.By definition, a node is always a member of a server cluster. For more information on the Cluster service, see Cluster service.Nodes have the following characteristics: 1  Every node is attached to one or more cluster storage devices. 2  Each cluster storage device attaches one or more disks. Every node is attached to one or more cluster storage devices. 2  Each cluster storage device attaches one or more disks. 3  The disks store all of the cluster's configuration and resource data. 4  Each disk can be owned by only one node at any point in time, but ownership can be transferred between nodes.