So over the last couple of days i had to restore my mac mini to a backup copy and once I connected via CMD R, I noticed immediately that the restore will take 7 hours of which I had suspected it was trying to restore via wifi. I then stopped wifi services and it still reported 7 hours for the restore. The restore is without an OS, unless it was using the driver from Sierra.
After the restore, I thought nothing of it until I tried copying 800MB of data to the cloud and it resulted in a 3 minute copy. Yup checked the cable, rebooted Cloud, assigned reserved IPs, all the standard stuff. Routers, switch, both Mac Mini and Clouds have been rebooted. Cable tested with MacBook retina resulting in standard gigabit speed.
The nail in the coffin is mounting the cloud with cifs or afp: gives us the standard 10-20 second copy of a 800MB file. Switch to smb and it slows down to 3 minutes.
My other MacBook retina using Sierra can mount the Cloud with smb without any slowdown in speed.
Fairly sure that the only change is 2.21.119. Sorry WD I won’t give you logs…