Ruben is backing up his photos with his 2TB hard drives and he's wanting to organize it according to Leo's suggestions. What's the best way to organize them? Leo says he uses Adobe Lightroom and he has it set to import photos according to year, month, and day. That way he can easily go to the exact date to find photos. Then, from now on, it'll import according to that structure. He can use tags in Lightroom to further organize it to make it far easier to search. Lightroom also has an iPad app to sync collections to.
Of course, Google Photos makes a great backup online as well.