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Figure 71. Removing a controller from the DS4200 Express
10. If the new controller does not have the cache battery backup unit already
11. Install the new controller by completing the following steps:
108
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
v For SFP modules that contain plastic tabs, slide the SFP module out of
the port.
v For SFP modules that contain wire tabs, grasp the wire latch and pull
the SFP module out of the minihub port.
d. Replace the protective cap on the SFP module.
e. Place the SFP module into a static-protective package.
f. Replace the protective cap on the port.
8. Squeeze the controller latch and pull the lever open 90° (so that the lever is
horizontal) to release the controller from the latch. The controller latch is a
coral colored tab on the lever.
Note: The lever rotates upward or downward 90°, depending on whether the
controller you are removing is the right or left controller CRU.
9. Slowly pull the lever away from the chassis to remove the controller from the
bay. Use two hands when releasing the controller levers. Figure 71 shows the
controller sliding from the storage subsystem chassis.
Lever
installed, follow the instructions in "Replacing a battery unit" on page 128 to
remove the cache backup battery from the existing controller unit and insert it
into the new controller CRU.
a. Slide one controller into the empty slot in the storage subsystem. Be sure
that the lever is pulled straight out as you slide the controller in, as shown
in Figure 72 on page 109.
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