Some models run the fans at full or high speed when a network card is installed. This is configured by a setting in /etc.defaults/synoinfo.conf
For some reason Synology chose to run the fans at full speed for the RS2418RP+ and RS2418+
support_fan_adjust_by_ext_nic="full"
RS2418RP+
RS2418+
Yet for other models Synology set the fans to run at high speed (Cool Mode).
support_fan_adjust_by_ext_nic="high"
RS4021xs+
RS4017xs+
RS3621xs+
RS3621RPxs
RS3618xs
RS3617xs
RS3617xs+
RS3617RPxs
RS18017xs+
RS18016xs+
RS1619xs+
FS6400
FS3600
FS3410
FS3400
FS3017
FS2017
SA3610
SA3600
SA3410
SA3400D
SA3400
SA3200D
HD6500
If you own an RS2418RP+ or RS2418+ and want to run the fans in cool mode with a network card installed:
sudo synosetkeyvalue /etc.defaults/synoinfo.conf support_fan_adjust_by_ext_nic high
sudo synosetkeyvalue /etc/synoinfo.conf support_fan_adjust_by_ext_nic high
So you don't have to do that after every DSM update you can set a scheduled task:
- Go to Control Panel > Task Scheduler > click Create > and select Triggered Task.
- Select User-defined script.
- Enter a task name.
- Select root as the user (The command needs to run as root).
- Select Boot-up as the event that triggers the task.
- Leave Enable ticked.
- Click Task Settings.
- Optionally you can tick Send run details by email and Send run details only when the script terminates abnormally then enter your email address.
- In the box under User-defined script enter the following 2 lines.
/usr/syno/bin/synosetkeyvalue /etc.defaults/synoinfo.conf support_fan_adjust_by_ext_nic high /usr/syno/bin/synosetkeyvalue /etc/synoinfo.conf support_fan_adjust_by_ext_nic high - Click OK to save the settings.