blackarmor-nas440-fan.conf

#
# Seagate Blackarmor NAS440 - fan control
#
# /etc/sysfs.d/blackarmor-nas440-fan.conf 
#
# https://www.kernel.org/doc/Documentation/hwmon/sysfs-interface
#

# Select which temperature channels affect this PWM output in
# auto mode. Bitfield, 1 is temp1, 2 is temp2, 4 is temp3 etc.
#
class/hwmon/hwmon0/pwm1_auto_channels_temp = 6

# Define the PWM vs temperature curve. Use this for chips
# which associate trip points to PWM output channels
#
# Integer value in the range 0 (min, 0%) to 255 (max, 100%).
#
class/hwmon/hwmon0/pwm1_auto_point1_pwm = 128
class/hwmon/hwmon0/pwm1_auto_point2_pwm = 255

# Define the PWM vs temperature curve. Use this for chips
# which associate trip points to temperature channels
#
# Integer value millidegree Celsius (e.g. 32000 => 32 deg C)
#
#class/hwmon/hwmon0/temp1_auto_point1_temp = 32000
#class/hwmon/hwmon0/temp1_auto_point2_temp = 42000

class/hwmon/hwmon0/temp2_auto_point1_temp = 38000
class/hwmon/hwmon0/temp2_auto_point2_temp = 48000

class/hwmon/hwmon0/temp3_auto_point1_temp = 41000
class/hwmon/hwmon0/temp3_auto_point2_temp = 51000

# Fan speed control method
#
# 2 = automatic fan speed control enabled
#
class/hwmon/hwmon0/pwm1_enable = 2