IBM System Storage Subsystem DS5020 - Manual (Page 153)

5. Unpack the new controller. Save all packing materials in the event you need to
return the new controller.
6. Determine whether the replacement controller will serve as controller A or
controller B (controller A is inserted in the left controller bay; controller B is
inserted in the right controller bay), and then apply the controller labels for host
channels, drive channels, and numeric display to the replacement controller.
The controller labels and instructions are included with the replacement
controller. Make sure that the labels are aligned properly and do not cover any
ports or LEDs.
Statement 3:
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber-optic devices,
or transmitters) are installed, note the following:
v Do not remove the covers. Removing the covers of the laser product
could result in exposure to hazardous laser radiation. There are no
serviceable parts inside the device.
v Use of controls or adjustments or performance of procedures other
than those specified herein might result in hazardous radiation
exposure.
DANGER
Some laser products contain an embedded Class 3A or Class 3B laser
diode. Note the following.
Laser radiation when open. Do not stare into the beam, do not view
directly with optical instruments, and avoid direct exposure to the
beam.
Class 1 Laser statement
Class 1 Laser Product
Laser Klasse 1
Laser Klass 1
Luokan 1 Laserlaite
Apparell
Laser de Calsse 1 À
IEC 825-11993 CENELEC EN 60 825
Attention: Handle and install fiber-optic cables properly to avoid degraded
performance or loss of communications with devices. For specific handling
guidelines, see “Handling fiber-optic cables” on page 47.
7. Disconnect all attached interface cables from the failed controller, including the
SFP modules. Make sure that you label each cable so that you can reconnect
them correctly to the new controller.
Use the following procedure to remove the SFPs from the RAID controller that
has failed:
Chapter 5. Replacing components 123