10TB is a bit extreme but I agree they should be bigger and less pricey (or better, upgradable). Regarding your comparison with nanoSD cards, the technology is

10TB is a bit extreme but I agree they should be bigger and less pricey (or better, upgradable). Regarding your comparison with nanoSD cards, the technology is completely different. If you want to try, just plug a nanoSD card into your Mac. The bottleneck in speed will be the card itself.