to transmit around 50TBytes over a 90 day period to a single location

According to bandwidth.com:



33.6 K (Modem)

33,600 bps

4 centuries, 15 years, 22 days, 23 hrs, 9 mins

56 K (Modem)

56,000 bps

2 centuries, 49 years, 13 days, 18 hrs, 41 mins, 24 secs

64 K (DS-0)

64,000 bps

2 centuries, 17 years, 331 days, 10 hrs, 21 mins, 13 secs

128 K (ISDN)

128,000 bps

1 century, 8 years, 348 days, 5 hrs, 10 mins, 36 secs

256 K (DSL)

256,000 bps

54 years, 174 days, 2 hrs, 35 mins, 18 secs

640 K (DSL/Cable)

640,000 bps

21 years, 288 days, 15 hrs, 26 mins, 7 secs

768 K (DSL/Cable)

768,000 bps

18 years, 58 days, 51 mins, 46 secs

T1, DS-1


1.544 Mbps

9 years, 11 days, 20 hrs, 19 mins, 31 secs

T3, DS-3

44.736 Mbps

113 days, 18 hrs, 51 mins, 52 secs

OC-1

51.840 Mbps

98 days, 4 hrs, 38 mins, 6 secs

OC-3

155.520 Mbps

32 days, 17 hrs, 32 mins, 42 secs

OC-12

622.080 Mbps

8 days, 4 hrs, 23 mins, 10 secs

OC-48

2.488 Gbps

2 days, 1 hr, 6 mins, 10 secs

OC-192

10 Gbps

12 hrs, 13 mins