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Hardware options installation 72
17.
Install the access panel (on page 26).
18. Do one of the following:
o For tower models, return the server to an upright position.
o For rack models, slide the server back into the rack.
19. Install the rack bezel (on page 25).
20. Power up the server (on page 22).
21. Do one of the following:
o For tower models, install the bezel ("Install the tower bezel" on page 23).
o For rack models, if removed, install the security bezel ("Security bezel option" on page 47).
For more information about the controller and its features, see the HP Smart Array Controllers for HP ProLiant
Servers User Guide on the HP website (http://www.hp.com/support/SAC_UG_ProLiantServers_en). To
configure arrays, see the Configuring Arrays on HP Smart Array Controllers Reference Guide on the HP
website (http://www.hp.com/support/CASAC_RG_en).
FBWC options
The server supports FBWC options:
FBWC consists of a cache module and a capacitor pack. The DDR cache module buffers and stores
data being written by the controller. When the system is powered on, the capacitor pack charges fully
in about 5 minutes. In the event of a system power failure, a fully charged capacitor pack provides
power for up to 80 seconds. During that interval, the controller transfers the cached data from DDR
memory to flash memory, where the data remains indefinitely or until a controller retrieves the data.
CAUTION: The cache module connector does not use the industry-standard DDR3 mini-DIMM
pinout. Do not use the controller with cache modules designed for other controller models,
because the controller can malfunction and you can lose data. Also, do not transfer this cache
module to an unsupported controller model, because you can lose data.
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.