For drive to be mapped it must be on a network with a DHCP. Otherwise the IP will be maybe not be set at all, or to some adress by default that I don’t know and drive be not accessible.
Can you ping the drive ?
Have you got a DHCP server ?
If not try to set up a dhcp server before you start the drive. I did it worked. I set up a dhcp with one linux box then accessed to the WD and set it up to a fixed IP of my choice, after that it did work.
