I have my PC, Synology, & Unraid all conntect to a TP Link 10G switch. My Synology & Unraid both have dedicated 10G & 1G ports, I have both NAS devices connected to the PC via the 10G switch. I ran iperf3 on all 3 devices and this is what I am coming up with.
PC -> Synology +5G
PC -> Unraid 1G
I have verified cables work properly and nothing obvious that I can see is the issue. My Unraid which runs on a Dell R720XD has a Intel X540/I350 rNDC with 2 10G ports & 2 1G ports. I have also verified that I am connected to the actual 10G port.
No matter what I try Unraid is strictly operating at 1G speeds even when trying both 10G ports.