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Removal and replacement procedures 45
7.
Remove the expansion slot cover retainer.
8. If removing a full-length expansion board, remove the board retainer securing it.
9. Remove the expansion board.
To replace the component, reverse the removal procedure.
Flash-backed write cache procedures
The following types of procedures are provided for the FBWC option:
• Removal and replacement of failed components:
o Removing the cache module ("FBWC module" on page 45)
o Removing the capacitor pack ("Capacitor pack" on page 46)
• Recovery of cached data from a failed server ("Recovering data from the flash-backed write cache" on
page 48)
CAUTION: Do not detach the cable that connects the battery pack or capacitor pack to the cache
module. Detaching the cable causes any unsaved data in the cache module to be lost.
FBWC module
CAUTION: The cache module connector does not use the industry-standard DDR3 mini-DIMM
pinout. Do not use the controller with cache modules designed for other controller models,
because the controller can malfunction and you can lose data. Also, do not transfer this cache
module to an unsupported controller model, because you can lose data.
CAUTION: In systems that use external data storage, be sure that the server is the first unit to be
powered down and the last to be powered back up. Taking this precaution ensures that the system
does not erroneously mark the drives as failed when the server is powered up.
To remove the component:
1. Power down the server (on page 27).