I bought the banana Pi M3 because it had Sata and a gigabit Ethernet connection. I planed to create a Nas using an external raid enclosure connected via Sata. Come to find out that the USB to SATA bridge is terrible and will never surpass USB 2.0 transfer speeds. Not to mention that my raid is not even recognized when connected via Sata.
I've accepted the fact that I would have to connect the raid via USB and live with no greater than 60 megabytes per second transfer speeds theoretical. Imagine my surprise when the maximum file transfer speeds achieved are 100 megabits per second or ~12MBps. It was then that I realized that the gigabit Ethernet port was functioning at one hundred megabits per second. I've tried ubuntu mate 15.10 and raspbian images. Although ethtool list the adapter as supporting 1000baset-fd, the device Auto negotiates at 100 and when I try to force it to 1000 using mii-tool, I get an error saying that it is not supported.
Please help me get gigabit working!