Removal and replacement procedures 40
2.
Power down the failed server ("Power down the server" on page 24). If any data is stored in the cache
module, a green LED on the module flashes every 2 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. Perform one of the following:
o If the array controller has failed, remove the cache module ("BBWC module" on page 37) and
battery pack from the failed array controller, and install the cache module and battery pack on an
array controller in the recovery server.
o If the server has failed, remove the controller, cache module ("BBWC module" on page 37), and
battery pack from the failed server, and install the controller, cache module, and battery pack in the
recovery server.
5. Power up the recovery server. A 1759 POST message is displayed, 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.
System battery
If the server no longer automatically displays the correct date and time, you might have to replace the battery
that provides power to the real-time clock.
WARNING: The computer contains an internal lithium manganese dioxide, a vanadium
pentoxide, or an alkaline battery pack. A risk of fire and burns exists if the battery pack is not
properly handled. To reduce the risk of personal injury:
• Do not attempt to recharge the battery.
• Do not expose the battery to temperatures higher than 60°C (140°F).
• Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.
• Replace only with the spare designated for this product.
1. Power down the server (on page 24).
2. Remove the access panel ("Access panel" on page 25).
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