Thermal Sensor Input For Fan Speed Control; System Fans; Figure 30. System Fan Identification - Intel JBOD 2000 Hardware Manual

Intel® Storage Server System JBOD 2000 Family Hardware Guide
5.3

Thermal Sensor Input for Fan Speed Control

The power distribution board uses various sensors as inputs to fan speed control. Some of the
sensors are actual physical sensors and some are virtual sensors derived from calculations.
The following thermal sensor is used as an input to fan speed control:
Front Panel Temperature Sensor

5.4

System Fans

Three 60x38-mm fans and an embedded fan for each installed power supply, provide the
primary airflow for the system. The system is designed for fan redundancy when configured with
two power supply modules. If a single fan fails (system fan or power supply fan), platform
management will adjust the airflow of the remaining fans and manage other platform features to
maintain system thermals. Fan redundancy is lost if more than one fan is in a failed state.
The system fan assembly is designed for ease of use and supports several features:
Each fan is hot-swappable.

Each fan is designed for tool-less insertion and extraction from the fan assembly. For

instructions on installing or removing a fan module, see the Intel
Service Guide.
Fan speed for each fan is controlled by integrated platform management controlled by

the PDB board. When system thermals fluctuate high and low, the PDB firmware will
increase or decrease the speeds of specific fans within the fan assembly to regulate
system thermals.
Each fan has a tachometer signal that allows the PDB to monitor its status.

On top of each fan is an integrated fault LED, although currently this feature is not

supported.
Revision 1.42

Figure 30. System Fan Identification

Thermal Management
®
JBOD 2000 Family
33