Sun Cluster 3.1 software now supports open topologies. You are no longer limited to the storage topologies listed in the Sun Cluster 3.1 Concepts document.
Use the following guidelines to configure your cluster.
Sun Cluster supports a maximum of eight nodes in a cluster, regardless of the storage configurations that you implement.
A shared storage device can connect to as many nodes as the storage device supports.
Shared storage devices do not need to connect to all nodes of the cluster. However, these storage devices must connect to at least two nodes.