The loss of a single fan rotor (one standard fan) causes loss of redundancy. The loss of two fan rotors (two standard fans
or one high-performance fan) causes the server to initiate a shutdown.
The high-performance fans are used for 8 SFF +2 SFF NVMe and 10 SFF drive configurations when NVMe drives are
installed in the server. They are also required for ASHRAE-compliant configurations. For more information on ASHRAE-
compliant configurations, see the Hewlett Packard Enterprise website http://www.hpe.com/servers/ASHRAE.
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 during the following temperature-related scenarios:
• At POST and in the OS, iLO 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 the BIOS/Platform Configuration (RBSU), iLO 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
the BIOS/Platform Configuration (RBSU).
Component identification 29
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