Removal and replacement procedures 44
To replace the component, reverse the removal procedure.
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 (on page 44)
o Removing the battery pack
• Recovery of cached data from a failed server ("Recovering data from the battery-backed write cache"
on page 45)
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 cache module
To remove the component:
1. Power down the server (on page 26).
2. Extend or remove the server from the rack ("Remove the server from the rack" on page 27, "Extend the
server from the rack" on page 25).
3. Remove the access panel ("Access panel" on page 30).
4. Remove the PCI riser cage ("PCI riser cage" on page 38).
5. Remove the controller ("Half-length expansion board" on page 42, "Full-length expansion board" on
page 43).
6. Remove the cache module.
To replace the component, reverse the removal procedure.
CAUTION: To prevent damage to the cache module during installation, be sure the cache
module is fully inserted before pressing down.
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