I agree there's no such thing as oversized storage, seeing as I have well in excess of 10 Terrabytes, but I really wouldn't want a 10 Terrabyte Mini. Most HD movies are only 1GB, so I would take about 10 and maybe a couple of TV episodes, they're only around 3 or 400mb. Most of my music is in the cloud, if I needed any of that I would just download a few albums.
Now if I was really going away for a long time, I would take my Surface which has one of those funny things called a USB port and a 2 Terrabyte Portable HDD full of entertainment.
Yeah well it's only because the technology is not up yet to have a 1TB storage with single NAND chip. When we're get there I would rather go with one single 10TB iPad + its charger instead of a laptop, external HDD and cable.