Hot-swap fan
The server supports variable fan speeds. The fans operate at minimum speed until a temperature
change requires a fan speed increase to cool the server.
The server shuts down in the following temperature-related scenarios:
• At POST:
The BIOS suspends the server for 5 minutes if it detects a cautionary temperature level.
If the cautionary temperature level is still detected after 5 minutes, the BIOS performs an
orderly shutdown and enters Standby mode.
◦
◦ The BIOS performs an orderly shutdown if two or more fans have failed.
◦ The server performs an immediate shutdown if it detects a critical temperature level.
NOTE: An immediate shutdown is a hardware-controlled function and it overrides any
firmware or software actions.
• In the operating system:
The Health Driver performs an orderly shutdown if it detects a cautionary temperature
level. If the server detects a critical temperature level before the orderly shutdown occurs,
◦
the server performs an immediate shutdown. Additionally, the Health Driver performs an
orderly shutdown if more than one fan is failed or removed.
◦ When Thermal Shutdown is disabled in RBSU, the server performs an immediate shutdown
if it detects a critical temperature level.
NOTE: An immediate shutdown is a hardware-controlled function and it overrides any
firmware or software actions.
For fan identification see Figure 4 (page 14).
To remove the component:
1. Extend or remove the server from the rack (“Remove the server from the rack” (page 102) or
“Extend the server from the rack” (page 99)).
2. Remove the access panel (“Access panel” (page 107)).
3. Remove the air baffle.
Hot-swap fan 109
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