HP ProLiant DL580 G4 Server - Manual (Page 49)

Hardware options installation 49
CAUTION: After the server is powered down, wait 15 seconds and then check the amber LED
before unplugging the cable from the cache module. If the amber LED blinks after 15 seconds,
do not remove the cable from the cache module. The cache module is backing up data, and
data is lost if the cable is detached.
IMPORTANT: The battery pack might have a low charge when installed. In this case, a POST
error message is displayed when the server is powered up, indicating that the battery pack is
temporarily disabled. No action is necessary on your part. The internal circuitry automatically
recharges the batteries and enables the battery pack. This process might take up to four hours.
During this time, the cache module functions properly, but without the performance advantage
of the battery pack.
NOTE: The data protection and the time limit also apply if a power outage occurs. When
power is restored to the system, an initialization process writes the preserved data to the hard
drives.
To install the BBWC option:
1. Power down the server (on page 24 ).
2. Extend the server from the rack, if applicable (" Extending the server from the rack " on page 24 ).
3. Remove the access panel (" Removing the access panel " on page 26 ).
4. Remove the system cage (" Removing the system cage " on page 28 ).
5. Install the battery pack into the server.
6. Install the controller into expansion slot 4 (" Expansion slot overview " on page 53 ), if applicable.
NOTE: In most configurations, the server ships with the controller installed in expansion slot 4.