I used to be a digitial hoarder (now less so, but I still have what I hoarded, built over a 15 year period). When I moved overseas, I shipped my 120HDs (~600TB) in a container (120 HDs don't take up "that" much space (they all arrived in one piece, though 5 have died, though only 3 non recoverable, after the first one died, I made sure to image each one first and then writing it back (bitrot was a problem)).

anyways, in took 2-3 months for it to arrive (and most of that time it was waiting in either port), but by my calculation, I have needed to transfer it at a consistent 80MB/s or so (close to gigabit) to be able to net the equivalent transfer rate.