Dell CX4 Series User Manual page 26

Figure 2-8 shows an example of a two node SAN-attached cluster.
Figure 2-9 shows an example of an eight-node SAN-attached cluster.
Similar cabling concepts can be applied to clusters that contain a different
number of nodes.
NOTE:
The connections listed in this section are representative of one proven
method of ensuring redundancy in the connections between the cluster nodes and
the storage system. Other methods that achieve the same type of redundant
connectivity may be acceptable.
Figure 2-8. Two-Node SAN-Attached Cluster
cluster node
Fibre Channel
connections
Fibre Channel
switch
26
Cabling Your Cluster Hardware
public network
private network
storage system
cluster node
Fibre Channel
connections
Fibre Channel
switch