Removal and replacement procedures 31
2.
Power down the failed server ("Power down the server" on page 16). If any data is trapped in the
cache module, the amber LED on the module ("BBWC LEDs" on page 87) blinks every 15 seconds.
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.
3. Transfer the hard drives from the failed server to the recovery server station.
4. Remove the BBWC cache module and battery pack from the failed server.
5. Perform one of the following:
• Install the BBWC into an empty BBWC DIMM socket on the system board of the recovery server.
• Install the BBWC into an empty BBWC DIMM socket on any Smart Array 641 or 642 controller
in the recovery server.
6. Power up the recovery server. A 1759 POST message appears, stating that valid data was flushed
from the cache. This data is now stored on the drives in the recovery server. You can now transfer
the drives (and controller, if one was used) to another server.
Removing the BBWC battery pack
1. Power down the server (on page 16).
2. Extend or remove the server from the rack ("Remove the server from the rack" on page 16).
3. Remove the access panel ("Removing the access panel" on page 17).
4. Remove the system cage ("Removing the system cage" on page 17).
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.
5. Remove the BBWC battery pack.
To replace the component, reverse the removal procedure.
