Can anyone tell me what powers an NAS provides to an Apple user? Could I store a bunch of 4K movies on one and effortlessly watch them from anywhere in the world on my iPad? Would it provide the ability to back up all my Macs nightly, wherever they may be located, as long as there's an internet connection? Could I set my digital camera (Sony) to upload every photo I take to it and then be able to view the photos during the same photo shoot on my iPad. Just curious how useful and easy to use these devices are these days. Thanks for whatever advice you could provide!