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Hardware options installation 70
IMPORTANT: Fan louvers must be present for the redundant configuration. Without the louvers,
all four fans are nonredundant.
NOTE: If your system is already installed with four fans, store the fan that is included in this kit as
a spare.
Installing a hot-plug redundant fan
1. Do one of the following:
o For tower models, open and remove the bezel ("Remove the tower bezel" on page 20).
o For rack models, if installed, remove the security bezel (on page 22).
2. Power down the server (on page 20).
3. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
4. Do one of the following:
o For tower models, place the server on a flat, level surface with the access panel facing up.
o For rack models, extend the server from the rack (on page 25).
5. Remove the access panel (on page 24).
6. Remove all the fans and fan blanks.