Cluster Administration
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NAS 4000s and 9000s Administration Guide
Figure 115: NAS server cluster diagram
Cluster Terms and Components
This section provides brief definitions of clustering terms. This information provides basic
knowledge of clusters and the terminology used throughout this document.
Nodes
The most basic parts of a cluster are the server heads. A server node is any individual computer
in a cluster or a member of the cluster. If the NAS device is a member of a cluster, then the
server heads are referred to as nodes.
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.
Cluster Node A
Node A
HBA 1
Private Network
Node A
HBA 2
Node B
HBA 2
Cluster Node B
Node B
HBA 1
SAN Switch
SAN Switch
Storage Area Network
Cluster
Quorum
Mirrorset
LUN 1
Data RAID set
Node A
LUN 2
Data RAID set
Node B
LUN 3
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Summary of Contents for NAS 4000s
Page 18: ...About this Guide 18 NAS 4000s and 9000s Administration Guide ...
Page 92: ...Disk Management 92 NAS 4000s and 9000s Administration Guide ...
Page 196: ...NetWare File System Management 196 NAS 4000s and 9000s Administration Guide ...
Page 246: ...Index 246 NAS 4000s and 9000s Administration Guide ...