ProLiant DL580 Generation 5 Maintenance and Service Guide

Removal and replacement procedures 49
Battery-backed write cache procedures
Two types of procedures are provided for the BBWC option:
• Removal and replacement of failed components:
o Removing the cache module ("Removing the BBWC cache module" on page 50)
o Removing the battery pack ("Removing the BBWC battery pack" on page 49)
• Recovery of cached data from a failed server ("Recovering data from the battery-backed write
cache" on page 51)
CAUTION: Do not detach the cable that connects the battery pack to the cache module.
Detaching the cable causes any unsaved data in the cache module to be lost.
Removing the BBWC battery pack
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.
CAUTION: Do not detach the cable that connects the battery pack to the cache module.
Detaching the cable causes any unsaved data in the cache module to be lost.
1. Power down the server (on page 26).
2. Extend or remove the server from the rack ("Extending the server from the rack" on page 27).
3. Remove the access panel ("Removing the access panel" on page 28).
4. If the bracket is installed, remove the bracket.