They don't say how fast, but imagine how long it
would take to read
2000Gb at paper tape speeds :-)
I'll read that as 2*10^11 bytes. A good paper tape reader reads 10^3
bytes/second. So it would take 2*10^8 seconds to read it. Now, there are
about 3*10^7 seconds in a year, so it would take about 6 or 7 years to
read in that much data.
Which is slow, but not impossibly slow!
-tony