Dell PowerVault NX3500 Administrator's Manual page 32

Best Practice Solution in the Non-Redundant Option
In the non-redundant option, the SAN/internal traffic is isolated from the
client traffic. All the client cables are connected to the client switch and the
SAN/Internal network cables are connected to the SAN switch. Peer
connections are always back to back.
32
Setting Up Your PowerVault NX3500 Solution