How to iperf test from Windows to Synology NAS

If you have DSM 6 you will have to use iPerf2, if you have DSM 7 you will have to use iPerf3.

To perform the test, please do as follows:

0- Open TCP port 11111 on the NAS’ router (if the NAS is in a different network) or firewall.

1- Access the NAS via SSH, you can follow instructions here.

2- Make sure you are logged as root user, if not, then run:

sudo -i

3- Once logged in as root, please execute the following commands to install and start the iperf process ( if you are running DSM 6 please use iperf instead of iperf3 ):

synogear install
iperf3 -s -p 11111

4- Then download the iperf tool on the Windows computer and unzip the downloaded .zip file from the following link (if DSM 6 download iperf2, if DSM 7 download iperf3)

5- Once the file has been unzipped, open a command console at the location where the iperf.exe/iperf3.exe file is located and run the following command with the IP/DDNS of the NAS (change iperf3.exe to iperf.exe if using DSM 6):

iperf3.exe -c IP/DDNS -p 11111 -t 20 -i 5

Once the test is completed, you will see the results like so:

As a last step, you can stop the namp server in the NAS and uninstall both synogear and iperf from your NAS and PC.

For synogear (in SSH session):

# Ctrl + C to stop the process
synogear remove