Dell EqualLogic PS5000 Hardware Maintenance page 31

PS5000 Hardware Maintenance Maintaining Control Modules
Figure 3-6: Installing a Control Module
After installing a control module, connect network cables to the control module,
as described in Connecting Network Cables on page 3-6. Then, if the array was
shut down, turn on power to the array.
Check the LEDs, as described in Interpreting Control Module LEDs on page 3-2.
Also, check the GUI Member Controllers window or invoke the CLI
member
command. The control module status will be
select show controllers
either (if there is only one control module) or .
active secondary
If two control modules are installed but only one appears in the GUI or CLI, the
control module may not be properly installed. Re-install the control module. If
both control modules still do not appear in the GUI or CLI, they may not be
running the same firmware, and you should contact your array support provider.
3–11