Redundant Hot-Plug Fans - HP ProLiant DL385 User Manual

Install the tape drive.
4.

Redundant hot-plug fans

NOTE: This procedure shows images of the SCSI model server, but it also applies to the SAS model server.
In the standard configuration, five fans cool the server. For the redundant configuration, three additional
fans are added to allow the server to continue operation in non-redundant mode if any one fan fails.
The server supports variable fan speeds to allow the speed of all fans to increase if the temperature in any
area increases. The fans will run at minimum speed until a temperature change requires a fan speed
increase to cool the server.
The server shuts down in the following 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 then restarts. This process repeats until the cautionary temperature level is no
longer detected.
The BIOS performs an orderly shutdown if less than five fans are operating in the standard
configuration or if less than seven fans are operating in the redundant configuration.
The server performs an immediate shutdown if it detects a critical temperature level.
IMPORTANT: An immediate shutdown is a hardware-controlled function and it overrides any firmware or
software actions.
In the OS:
With the health driver loaded and thermal shutdown enabled in RBSU, 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 less than five fans are operating
in the standard configuration, or if less than seven fans are operating in the redundant
configuration.
Hardware options installation 54