Removing and replacing a hot-swap fan
Six fans cool the server. The fans are all redundant, hot-swappable, and interchangeable. If one
fan unit fails, then the other fans increase speed to compensate. The fan units are N+1 redundant,
meaning that the server has six fan units, but can operate with five fan units running.
CAUTION: If more than one fan is removed or fails, the system does not shut down.
If the temperature sensors detect conditions outside of operating limits, the system shuts down.
Figure 15 Fan identification
The power supplies have built-in fans and are not controlled by iLO 3.
For fan identification, see Figure 15 (page 101).
1. Extend or remove the server from the rack (“Removing the server from the rack” (page 95) or
“Extending the server from the rack” (page 93)).
2. Remove the access panel (“Removing and replacing the access panel” (page 99)).
Removing and replacing a hot-swap fan 101
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