Cluster communication

Cluster communication takes advantage of traditional networking interfaces, such as IP based network communications and storage interface communication through Fibre Channel and SAS adapters.

When you use both the IP-based network communications and the storage interface communications, all nodes in the cluster can always communicate with any other nodes in the cluster configuration. Having clusters in this configuration eliminates "split brain" incidents.

You must complete the Fibre Channel setup before the cluster can use the storage interfaces as an alternative communication path. The SAS adapter does not require special setup.

During Storage Area Network port configuration you must verify that your server interfaces are connected to the SAN fabric ports in the same zone.