HP ProLiant DL320s Server - Manual (Page 36)

Hardware options installation 36
3. Remove the battery pack.
4. Remove the upper tray (" Removing the upper tray " on page 27 ).
5. If the existing cache is connected to a battery, observe the BBWC Status LED (" Battery-backed write
cache LEDs " on page 16 ).
o If the LED is blinking every 2 seconds, data is still trapped in the cache. Restore system power,
and repeat the previous steps.
o If the LED is not lit, disconnect the battery cable from the cache.
6. Remove the controller.