Filter
Top Products
Removal and replacement procedures 58
o
If the LED is not illuminated, disconnect the battery cable from the cache.
5. Disconnect the cable.
6. Remove the battery pack.
The SPI board is removed for clarity.
To replace the component, reverse the removal procedure.
Recovering data from the battery-backed write cache
If the server fails, use the following procedure to recover data temporarily stored in the BBWC.
CAUTION: Before starting this procedure, read the information about protecting against
electrostatic discharge ("Preventing electrostatic discharge" on page 25).
1. Perform one of the following:
o Set up a recovery server station using an identical server model. Do not install any internal drives or
BBWC in this server. (HP recommends this option.)
o Find a server that has enough empty drive bays to accommodate all the drives from the failed server
and that meets all the other requirements for drive and array migration.
2. Power down the failed server ("Power down the server" on page 26). 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 ("Removing the BBWC cache module"
on page 56) and battery pack ("Removing the BBWC battery pack" on page 57) from the failed
array controller, and install the cache module and battery pack on an array controller in the
recovery server.