System Cooling Fan; Fan Control - Intel SS4000-E Technical Product Specification

System Cooling Fan

3. System Cooling Fan
®
The Intel Entry Storage System SS4000-E includes a cooling fan that has a single rotor 92 mm
fan, mounted on the rear of the chassis. The Power Supply enclosure contains one 40 mm fan
for cooling the power supply module.
3.1

Fan Control

The fan provides optimal acoustic and thermal performance. The fan is capable of running at
two speeds, low for most office environments, and high for higher temperature environments.
This is controlled by two backplane mounted temperature sensors. If a sensor on the
backplane is equal to or higher than 42 °C, the fan will set to high speed. The temperature
reading at the backplane depends on hard disk power and loading, but will occur at the high end
of the operating temperature range, somewhere around 32 °C to 35 °C. If a sensor is between
37 °C and 42 °C, the fan speed will not change. If a sensor drops below 37 °C, the fan will be
set back to low speed.
If a sensor on the backplane is between 50 °C and 55 °C, a warning event is recorded in the
system log and an email alert is sent. If a sensor on the backplane is equal to, or exceeds, 55
°C a critical error will be recorded in the system log and the system will initiate a shutdown.
When the system is powered back on, the system log will show the appropriate thermal events.
If the CPU temperature is between 80 °C and 85 °C the system will log a warning event and can
send an email alert. If the CPU temperature reaches, or exceeds, 85 °C the system will log a
critical event and initiate a shutdown. When the system is powered back on, the system log will
show the thermal shutdown event.
The fan speed is monitored for proper operation and events are logged in the system log based
on the fan rpm. If the fan speed is greater than 1450 rpm the fan operating normally. If the fan
speed is greater than or equal to 1323 rpm but less than 1450 rpm a warning event will be
recorded in the system log. If the fan speed is less than 1323 a critical event is recorded in the
system log and an email alert will be sent. This is repeated daily until the problem is resolved or
the system initiates a shutdown due to an 'overtemp' condition.
24
Fan
Fan Voltage
Speed
Low ~ 6.15V
High ~9.75V
Intel® Entry Storage System SS4000-E
RPM
~1800
~2600
Revision 1.2