Dell PowerVault MD3200 Deployment Manual page 18

Figure 2-8 and Figure 2-9 show up to four cluster nodes connected to two
RAID controller modules. Since each cluster node has redundant paths, loss
of a single path would still allow access to the storage array through the
alternate path.
Figure 2-8. Four Cluster Nodes Connected to Two Controllers
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Hardware Installation
Four cluster nodes
Storage array
Corporate, public,
or private network