

Does the Proxmox host have the driver installed for your 2.5Gb NIC? Can’t use it if it’s not installed. Connect to the host and run ethtool <device>
. Should show the link speed as Speed:
.
I have roughly 40TB of media to transfer and 8MB/s isn’t going to cut it.
If you need ultra-speed data, why not do a 100GbE switch with JBOD? 40TB isn’t a small amount of data. Generally no matter what setup you have it’s going to take a significant amount of time to swap data here.
This is categorically untrue. The kernel includes most open source drivers however it does not include proprietary drivers (or even all open source drivers) which require recompiling the kernel itself or installing secondary headers…
I’ve used many networking cards in the past that required you to recompile the kernel for them to work properly…