User's Manual

5. Is the service action allowed LED lit?
v Yes: Go to step 6.
v No: Another component might require attention before you can remove the
controller. Use the Recovery Guru in the DS3000 Subsystem Management
window to identify and correct any additional failures. If there are none,
proceed with step 6 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.
6. Unpack the new controller. Save all packing materials in case you have to
return the new controller.
7. 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. 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 SAS cables correctly to avoid degraded
performance or loss of communication with devices. When you work with SAS
cables, do not pinch them, step on them, or locate them in aisles or walkways.
Do not overtighten the cable straps or bend the cables to a radius smaller than
38 mm (1.5 in.).
8. Disconnect all attached interface cables from the failed controller. Be sure to
label each cable so that you can reconnect it correctly to the new controller.
9. If the controller has failed in a single-controller storage subsystem, turn off the
power immediately (see “Performing an emergency shutdown” on page 57 for
instructions.)
10. Remove the controller from the chassis.
a. On the left side of the controller, press the orange release tab to the right
just enough to release the handle; then, rotate the handle upward.
b. Slowly pull the handle away from the chassis to remove the controller from
the bay, as shown in Figure 40.
c. Place the controller on a level surface.
Handle
Guide pin
Notch
Figure 40. Removing and replacing a controller
Chapter 5. Replacing components 67