Well… that’s a horrible situation to be in, but, apart from the advices given by folks, another solution will be grabbing 10pc’s, and make them download 20TB each, if you can have different connections, the better.

I know using 10pc’s is not that easy, but thats the only solution I can think of right now given the emergency. With that maybe you could save half of the information. Of course you need to buy some HDD’s