External drive restrictions?

Are there any restrictions on the external drive?  I was thinking of adding a 5TB drive for more computer backups, but I don’t know if the WD Smartware will backup to the external drive.  Will it?


I have never tried connecting a 5TB external drive. The My Cloud User’s Manual does not mention any restrictions regarding a USB external drive. It says:  “The USB drive can serve as a target for backups in WD SmartWare, Windows, or
Time Machine”

Check page # 106 of the User’s Manual.