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Removal and replacement procedures 49
To replace the component, reverse the removal procedure.
Air baffle
To remove the component:
CAUTION: For proper cooling do not operate the server without the access panel, baffles,
expansion slot covers, or blanks installed. If the server supports hot-plug components, minimize
the amount of time the access panel is open.
1. Power down the server (on page 27).
2. Extend or remove the server from the rack ("Remove the server from the rack" on page 28, "Extend the
server from the rack" on page 28).
3. Remove the access panel ("Access panel" on page 34).
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.
4. Remove the battery pack from the air baffle ("Removing the battery pack" on page 50).
5. Remove the air baffle.
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 50)
o Removing the battery pack (on page 50)
• Recovery of cached data from a failed server ("Recovering data from the battery-backed write cache"
on page 51)