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Removal and replacement procedures 32
IMPORTANT: When replacing one failed fan only in a redundant configuration, powering down
the server is not required.
To remove the component:
1. Power down the server (on page 27).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Tower bezel" on page 30).
o Extend the server from the rack (on page 28).
3. Remove the access panel ("Access panel" on page 31).
4. Remove the fan from the air baffle.
To replace the component, reverse the removal procedure.
Cache 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.
To remove the component:
1. Power down the server (on page 27).
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.
2. Do one of the following:
o Unlock and remove the bezel ("Tower bezel" on page 30).
o Extend the server from the rack (on page 28).
3. Remove the access panel ("Access panel" on page 31).