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HSG80 Array Controller V8.7 Maintenance and Service Guide
Replacement Procedures for BA370 Enclosure Elements
IMPORTANT: The replacement cache module must contain the same cache memory
configuration as the module being replaced.
1. Insert each DIMM
1
straight into the appropriate slot
2
of the cache module,
ensuring that the notches in the DIMM align with the tabs in the slot (see
Figure 3–6).
2. Press the DIMM gently into the slot until seated at both ends.
3. Engage the two retaining clips
3
for the DIMM.
4. Make sure both ends of the DIMM are firmly seated in the slot and both retaining
clips engage the DIMM.
5. Repeat step 1 through step 4 for each DIMM.
6. Connect a PC or terminal to the maintenance port of the operational controller.
The controller connected to the PC or terminal becomes “this controller”; the
controller for the cache module being installed becomes the “other controller.”
7. Start FRUTIL with the following command:
RUN FRUTIL
8. Enter N(o) to the question about replacing the cache battery.
9. Enter 2 for the install a controller or cache module option.
10. Enter 3 for the install the “other controller” cache module option.
11. Enter Y(es) to confirm the intent to install the “other controller” cache module.
CAUTION: Wait for FRUTIL to quiesce the device ports—indicated by an “All device
ports quiesced” message. Failure to allow the ports to quiesce might result in data
loss. Quiescing might take several minutes.
The ECB must be disabled—the ECB status light is O
FF
—before connecting the ECB
cable to the cache module. Failure to disable the ECB might result in cache module
damage.
The ECB Y-cable has a 12-volt and a 5-volt pin. Improper handling or misalignment
when connecting or disconnecting might cause these pins to contact ground, resulting
in cache module damage.
IMPORTANT: A countdown timer allows a total of 2 minutes to install the cache module.
After 2 minutes, “this controller” exits FRUTIL and resumes operations. If this happens,
return to step 7 and proceed.
12. Disable the ECB by pressing the battery disable switch until the status light stops
F
LASHING
—approximately 5 seconds.