Dell EqualLogic PS5000 Hardware Maintenance page 27

PS5000 Hardware Maintenance Maintaining Control Modules
Figure 3-2: Recommended Single Control Module Configuration
For a dual control module array, the minimum network configuration is a network
connection to Ethernet 0 on both control modules. Although this configuration
protects against control module failover, it is still a potential point of failure (for
example, if the network cable connected to the active control module is
disconnected). Therefore, it is recommended that you connect multiple network
interfaces to different switches.
Figure 3-3 shows the minimum network configuration for a dual control module
PS5000 array. Cables are connected to Ethernet 0 on both control modules.
Figure 3-3: Minimum Dual Control Module Configuration
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