Technical data

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Compaq HSZ80 Array Controller ACS Version 8.3 Maintenance and Service Guide
3. Shut down the controllers. In single-controller configurations, shut down “this
controller.” In dual-redundant controller configurations, shut down the “other
controller” first, then shut down “this controller” with the following commands:
SHUTDOWN OTHER_CONTROLLER
SHUTDOWN THIS_CONTROLLER
When the controllers shut down, their reset buttons and their first three LEDs are
lit continuously. This may take several minutes, depending on the amount of data
that needs to be flushed from the cache modules.
4. Turn off the power to the subsystem.
5. Insert the new ECB SBB into its slot.
CAUTION: The ECB cable has a 12-volt and a 5-volt pin. Improper
handling or misalignment when connecting or disconnecting could
cause these pins to contact ground, resulting in cache module damage.
6. Connect the open end of the ECB Y cable to the new ECB.
7. Restore power to the subsystem. The controller automatically restarts.
8. Disconnect the ECB cable from the old ECB.
9. Start FRUTIL with the following command:
RUN FRUTIL
FRUTIL displays the following:
Do you intend to replace this controller’s cache battery? Y/N