Dell EqualLogic PS4000 Hardware Maintenance page 38

PS4000 Hardware Maintenance
Figure 3-9: Installing a Control Module
5. Connect the network cables as described in Connecting Network Cables on
page 3-6.
6. If the array was shut down, turn on power to the array.
7. Examine the LEDs, as described in Interpreting Control Module LEDs on
page 3-2. Also, check the GUI Member Controllers window or run the CLI
member select show controllers
status will be either
.
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. Contact your array support provider.
Notes: When connected, a control module cache battery may begin to charge. If
the low-battery-safe cache policy is enabled (the default), the array will
operate in write-through mode until the cache battery is fully charged.
However, if you need optimal performance before the battery is fully
3–14
(if there is only one control module) or
active
Maintaining Control Modules
command. The control module