Node expansion means adding on an extra node to an operating cluster system. The purpose of node expansion is to provide high availability and extend available business operations.
The node expansion procedure is explained below:
Note
Use the same OS version, collective updates, and patches as those of the existing cluster nodes.
Stop operation when nodes are to be added.
Two or more nodes cannot be added at the same time. When multiple nodes are to be added, add them one by one.
The nodes to be added must be of the same model as the existing cluster nodes.
In the following explanation, node1 and node2 are used as the node names of the existing cluster nodes while node3 is used as the node name of the new node.
