HP ProLiant DL385 G6 Server - Manual (Page 26)

Operations 26
Hot-plug fan operation
CAUTION: To avoid damage to server components, fan blanks must be installed in fan bays 5
and 6 in a single-processor configuration.
The only two valid fan configurations are listed in the following table.
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 and 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 2 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 2 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.