Removal and replacement procedures 37
Configuration Fan bay 1 Fan bay 2 Fan bay 3 Fan bay 4 Fan bay 5 Fan bay 6
1 processor
Fan Fan Fan Fan Fan blank Fan blank
2 processors
Fan Fan Fan Fan Fan Fan
For a single-processor configuration, four fans and two blanks are required in specific fan bays for
redundancy. A fan failure or missing fan causes all fans to spin at high speed. A second fan failure or missing
fan causes an orderly shutdown of the server.
Installing more than the required number of fans in a single-processor configuration is not a thermally
supported configuration.
For a dual-processor configuration, six fans are required for redundancy. A fan failure or missing fan causes
all fans to spin at high speed. A second fan failure or missing fan causes an orderly shutdown of the server.
The server supports variable fan speed. The fans operate at minimum speed until a temperature change
requires a fan speed increase to cool the server. The server shuts down during the following
temperature-related scenarios:
• At POST and in the OS, iLO 3 performs an orderly shutdown if a cautionary temperature level is
detected. If the server hardware detects a critical temperature level before an orderly shutdown occurs,
the server performs an immediate shutdown.
• When the Thermal Shutdown feature is disabled in RBSU, iLO 3 does not perform an orderly shutdown
when a cautionary temperature level is detected. Disabling this feature does not disable the server
hardware from performing an immediate shutdown when a critical temperature level is detected.
CAUTION: A thermal event can damage server components when the Thermal Shutdown feature
is disabled in RBSU.
To remove the component:
1. Extend or remove the server from the rack ("Remove the server from the rack" on page 28, "Extend the
server from the rack" on page 28).
2. Remove the access panel ("Access panel" on page 34).
