HP ProLiant DL580 G4 Server - Manual (Page 21)

Upgrading or replacing controller options 21
4. Plug the other end of the battery cable into the connector on the cache module.
NOTE: Your model might look different from the one illustrated.
NOTE: After installing a battery pack, you might see a POST message during reboot indicating that the
array accelerator (cache) is temporarily disabled. This is normal, because the new battery pack is likely to
have a low charge. You do not need to take any action, because the recharge process begins automatically
when the battery pack is installed. The controller will operate properly while the battery pack recharges,
although the performance advantage of the array accelerator will be absent. When the battery pack has
been charged to a satisfactory level, the array accelerator will automatically be enabled.
Replacing a battery
WARNING: There is a risk of explosion, fire, or personal injury if the battery pack is not
properly handled. Refer to "Battery replacement notice (on page 38 )" before installing or
removing any item that contains a battery pack.
1. Close all applications, and then power down the server. This procedure flushes all data from the
cache.
CAUTION: Do not replace a battery pack while the server is powered up. In this situation, the loose end of
the battery cable that is still connected to the cache can cause a short circuit, leading to permanent electrical
damage.
2. Disconnect the server from the AC power source.
3. Observe the BBWC Status LED (" Battery pack LEDs " on page 33 ).
• If the LED is blinking every two seconds, data is still trapped in the cache. Restore system
power, then repeat the previous steps in this procedure.
• If the LED is not lit, proceed with the next step.
4. Unplug the cable from the battery pack.