HP ProLiant DL120 G5 Server - Manual (Page 28)

Hardware options installation 28
9. Install the PCI riser board assembly (on page 8 ).
10. Install the secondary access panel.
11. Install the primary access panel.
12. Install the server into the rack.
Battery-backed write cache battery option
CAUTION: To prevent a server malfunction or damage to the equipment, do not add or
remove the battery pack while an array capacity expansion, RAID level migration, or stripe
size migration is in progress.
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 battery option:
1. Power down the server (on page 6 ).
2. Remove the server from the rack (on page 6 ).
3. Remove the primary access panel (on page 7 ).
4. Install the storage controller, if not installed (" Storage controller option " on page 27 ).