Removing And Replacing A Controller - IBM DS3500 Installation, User's, And Maintenance Manual

Guru, click the Support tab in the Subsystem Management window. See "Troubleshooting the
storage subsystem" on page 4-6 topic for information about using the Recovery Guru.
If there are no additional failures, proceed with step 5 to replace the controller.
Attention: Static electricity can damage the storage subsystem and other electronic devices. To
avoid damage, keep static-sensitive devices in their static-protective packages until you are ready to
install them.
5. Unpack the new controller. Save all packing materials in case you have to return the new controller.
6. Determine whether the replacement controller will be controller A or controller B (controller A is
installed in the left controller bay; controller B is installed in the right controller bay), and then apply
the controller labels for host ports and drive expansion ports to the replacement controller. In a
single-controller storage subsystem, the new controller will go into the same slot, as the old one. The
controller labels and instructions are included with the replacement controller. Make sure that the
labels are aligned correctly and do not cover any connectors or LEDs.
Attention: Handle and install cables correctly to avoid degraded performance or loss of
communication with devices. See "Cabling the DS3500 storage subsystem" on page 3-1 for more
information.
7. Disconnect all attached interface cables from the failed controller. Ensure that you label each cable so
that you can reconnect it correctly to the new controller.
8. In a single-controller storage subsystem, shut down the storage subsystem (see "Turning off the
storage subsystem" on page 4-14 for the correct sequence of steps) ; then, continue with step 3 on
page 5-5. See Figure 1-7 on page 1-11 for an example of a single-controller Storage Subsystem.
9. Remove the controller from the chassis.
Release
levers
Figure 5-4. Removing and replacing a controller
a. Open the two release levers as shown in the illustration. The controller moves out of the bay
approximately 0.6 cm (0.25 inch).
b. Pull the controller out of the bay.
DANGER
Electrical voltage and current from power cables are hazardous. To avoid a shock hazard,
always place electrical equipment on dry, static-free level surfaces. Never turn on any
electrical equipment when there is evidence of fire, water, or structural damage.
c. Place the controller on a dry, static-free level surface.
Attention: The DS3500 replacement controller ships with a temporary filler. Place the temporary
filler in the controller chassis bay after the failed controller is removed, to maintain proper airflow
and cooling.
5-6
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide