HP DL160 HP ProLiant Storage Server User Guide (440584-004, February 2008) - Page 126
Cluster terms and components, Nodes, Resources
UPC - 883585847174
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Cluster Node A Private Network Node A HBA 1 Node A HBA 2 +++ + + ++ + N++o+d+e+B + HBA 2 Node B HBA 1 SAN Switch SAN Switch Cluster Node B Cluster Quorum Mirrorset LUN 1 Storage Area Network Data RAID set Node A LUN 2 Data RAID set Node B LUN 3 Figure 39 Storage server cluster diagram Cluster terms and components Nodes The most basic parts of a cluster are the servers, referred to as nodes. A server node is any individual server in a cluster, or a member of the cluster. Resources Hardware and software components that are managed by the cluster service are called cluster resources. Cluster resources have three defining characteristics: • They can be brought online and taken offline. • They can be managed in a cluster. • They can be owned by only one node at a time. Examples of cluster resources are IP addresses, network names, physical disk resources, and file shares. Resources represent individual system components. These resources are organized into groups and managed as a group. Some resources are created automatically by the system and other resources must be set up manually. Resource types include: • IP address resource • Cluster name resource • Cluster quorum disk resource • Physical disk resource • Virtual server name resources 126 Cluster administration