Removal and replacement procedures 36
4.
Disconnect the BBWC cable from the cache module.
5. Remove the battery pack.
To replace the component, reverse the removal procedure.
Recovering data from the battery-backed write cache
If the server blade 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 22).
1. Perform one of the following:
o Set up a recovery server blade station using an identical server blade model. Do not install any
internal drives or BBWC in this server blade. (HP recommends this option.)
o Find a server blade that has enough empty drive bays to accommodate all the drives from the
failed server blade and that meets all the other requirements for drive and array migration.
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