Thank you for your input.
I believe there's a bug in the BIOS/Firmware for the interaction with the Intel i210 NICs. I tried a PCIe add-on card (Startech) which have two i350 NICs on them. There I get a regular speed. But I have another problem with that…
What I already checked:
iPerf gives me a network speed between 320 Mbps and 350 Mbps. I compiled the latest Linux drivers from Intel for the igb drivers, but no luck. Thankfully with some good guide here.
I stumbled on a thread for another NAS system,…
I installed OMV 5.X on the ASRock X570D4U motherboard (the one without 10 GbE NICS). It has a dual NIC INTEL i210 ethernet controller.
Everything works out-of-the-box. But my network speed is slow, transferring a file has a speed around 25 MB/s - 35…