Can I delete items from my Mac and it will be saved/reappear on my LaCie hard drive when I plug it back in?

I purchased a LaCie a while back and I am not sure if I understood how hard drives work. I bought this because my previous hard drive did not save any of my files when my Mac got stolen. As a student, I accumulated school work and want to clear out my laptop. If I plug in my LaCie, all my files should be uploaded on the hard drive right? So if I delete them off my Mac afterwards, I would not have to worry because my LaCie would have them still?

Thanks

• Asked by fn from Vallejo
• 27 Aug 2018