About two ounces (60 grams), or perhaps 0.2 millionths of an ounce (6 micrograms), depending which method you use to calculate the weight of the active electrons necessary to sustain the global network.

I didn’t know about the Office Depot® CD Double Slim Jewel Cases — that would effectively double the bandwidth. I did make a choice not to use the Tyvek sleeves (as if this choice really meant something!) because of all of the bouncing around a Boeing 747 would encounter on take-off and landing — we do have our commitment to media preservation to uphold, after all. Besides, that would decrease our bandwidth because of the increased need for checksum discs and other error-correction schemes should some quantity of disks fail in flight. (Retransmission of the entire 747-sized packet is a lot of overhead.)

I am starting to get concerned, however, about exceeding the lift capacity of the air frame. That, however, is left as an exercise for the (next) reader…

But…Office Depot (for one) now sells slim jewel cases that hold TWO CDs or DVDs or Blu-ray discs each (that is, four in the equivalent space of one regular jewel box.

So that makes it 74Tb/s. Not bad for physical shipment.

I could get fancy and suggest that using Tyvek sleeves might allow you to cram in even more, which is true enough (I get around 3.5 sleeved discs in the space of a single slim jewel box), and that puts the bandwidth at something better than 100Tb/s. But that also leaves the discs pretty well unprotected…