125 shows the controller sliding from the storage subsystem chassis.
10. If the new controller does not have the cache battery backup unit already
installed, follow the instructions in “Replacing a battery unit” on page 144 to
remove the cache backup battery from the existing controller unit and insert it
into the new controller CRU.
11. Install the new controller.
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 78.
b. As you slide the controller into the empty slot, make sure the guide pins on
the side of the controller fit into the notches. After the guide pins fit into the
notches and the controller fits snugly into the bay, push the lever downward
or upward 90°, depending on whether the controller is inserted in the Aor
Lever
Figure77. Removing a controller from the DS5020
Lever
Guide pin
Notch
Figure78. Installing a controller
Chapter5. Replacing components 125