Backing up a My Passport onto another My Passport

Does anyone know if it is possible to back up one My Passport to another? I use one for school so that my computer does not fill up so I need to back it up. Don’t know if it is possible but I was thinking connecting one to my computer and the other to the first passport. Yea or Na?

If you are using smartware that is not possible. You can just manually copy the files and paste it to the other drive.