Backup server through WD Software


I have WD Smartware I need to backup a local server, which I normally connect to through WIFI. When I open the program it is only possible to choose between C and D disk, no external N disk (name of my server). Does anyone have any ideas what the problem is alternatively what program which can solve my problem, thanks for any reply.


The software will only backup drives directly attached to the PC

But it is through USB. Should not that work? Do you have any other suggestions? Thanks for reply!