I am considering buying the 3TB WD My Cloud backup and would like to know if I can attach this drive directly to my modem and leave my computer switched off when traveling, i.e., does it need to be connected to a computer to be visible remorely?
Connect the MyCloud to your router or modem/router combo. Setup your users and share and leave the MyCloud powered up. You can turn everything else off. Make sure you have Remote Access turned on in the dashboard (See the user manual) and you can connect remotely using the Desktop App on a remote computer or WD2GO and with the proper username and password you can connect to your MyCloud.