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Removal and replacement procedures 30
CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all
expansion slots have either an expansion slot cover or an expansion board installed.
To replace the component, reverse the removal procedure.
Removing the PCI Express mezzanine option
1. Power down the server (on page 16).
2. Extend or remove the server from the rack ("Remove the server from the rack" on page 16).
3. Remove the access panel ("Removing the access panel" on page 17).
4. Remove the expansion boards from slots 1 and 2.
5. Remove the expansion boards from slots 3 and 4, if installed, to gain access to the mezzanine
board.
6. Loosen the thumbscrews, and lift the mezzanine board from the server.
CAUTION: To prevent improper cooling and thermal damage, do not operate the server unless all
expansion slots have either an expansion slot cover or an expansion board installed.
To replace the component, reverse the removal procedure.
Recovering data from the BBWC
If the server fails, you can recover any data temporarily trapped in the BBWC by using the following
procedure.
CAUTION: Before starting this procedure, read the information about protecting against electrostatic
discharge ("Preventing electrostatic discharge" on page 14).
1. Perform one of the following:
• Set up a recovery server station using an identical server model. Do not install any internal drives
or BBWC in this server. (This option is preferred.)
• 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.