Battery-backed write cache enabler option – HP ProLiant BL25p G2 Server-Blade User Manual

Page 31

Hardware options installation 31

Install the NIC mezzanine. Press down above the connector to seat the board.

Install the access panel.

Install the server blade ("

Battery-Backed Write Cache Enabler option

The optional BBWC enabler provides the system with a means for storing and saving data in the event of

an unexpected system shutdown.

CAUTION: To prevent a server blade 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 blade is powered down, wait 15 seconds and then check the amber LED

before removing the battery from the cache module. If the amber LED flashes after 15 seconds, do not

remove the battery from the cache module. The cache module is backing up data, and data is lost if the

battery is detached before the LED is extinguished.

IMPORTANT: The battery pack might have a low charge when installed. In this case, a POST error

message is displayed when the server blade 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 component:

Power down the server blade (on page