Battery-Backed Write Cache - HP ProLiant DL585 User Manual

Install the expansion board.
6.
Lock the retaining clip (for full-length expansion boards), and close the latch.
7.
Connect any required internal or external cables to the expansion board.
8.
Replace the access panel ("Removing the access panel" on page 28).
9.
Slide the server into the rack.
10.
Power up the server (on page 27).
11.

Battery-backed write cache

The HP BBWC protects against hard boot, power, controller, and system board failures. The server
supports the following battery-backed options:
•
256-MB BBWC option
•
512-MB BBWC option
The BBWC consists of two parts: a battery pack and a storage cache module.
Along with the cache module, the battery pack provides transportable data protection, increases overall
controller performance, and maintains any cached data for up to 72 hours after the server loses power.
The NiMH batteries in the battery pack are continuously recharged through a trickle-charging process
whenever the system power is on.
CAUTION:
remove the battery pack while an array capacity expansion, RAID level migration, or stripe
size migration is in progress.
CAUTION:
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:
error message is displayed when the server is powered up, indicating that the battery pack is
To prevent a server malfunction or damage to the equipment, do not add or
After the server is powered down, wait 15 seconds and then check the amber LED
The battery pack might have a low charge when installed. In this case, a POST
Hardware options installation 48