A configuration node is a single node that manages configuration activity of the cluster.
If the configuration node fails, the cluster chooses a new configuration node. This action is called configuration node failover. The new configuration node takes over the cluster IP addresses. Thus you can access the cluster through the same IP addresses although the original configuration node has failed. During the failover, there is a short period when you cannot use the command-line tools or SAN Volume Controller Console.
Figure 1 shows an example cluster containing four nodes. Node 1 has been designated the configuration node. User requests (1) are handled by Node 1.
