Managing nodes
You can manage nodes with either the command-line interface or the management GUI.
- Adding a node to a system
You can add a node to the system by using the CLI or management GUI. A node can be added to the system if the node previously failed and is being replaced with a new node or if a repair action causes the node to be unrecognizable by the system. When you add nodes, ensure that they are added in pairs to create a full I/O group. Adding a node to the system typically increases the capacity of the entire system. Adding spare nodes to a system does not increase the capacity of the system. - Adding hot-spare nodes to a system
When you add nodes, you can specify up to four of them as hot-spare nodes. A hot-spare node can become online (handling I/O operations) automatically if needed. For example, if a node fails, an available hot-spare node that matches the failed node is activated automatically and moves to the Online Spare state. The hot-spare node handles I/O operations for the failed node until it comes back online. After the node returns to the system, the hot-spare node returns to the Spare state, which indicates it can be automatically swapped for other failed nodes on the system. - Deleting a node from a system by using the CLI
You can use the command line interface (CLI) to remove a node from a system. - Determining the WWNNs of a node using the CLI
You can determine the worldwide node names (WWNNs) of a node using the command-line interface (CLI).
Parent topic: Administering