[Gllug] Transferring large files at specified times

[Rich Walker]

Richard Cohen <vmlinuz at gmail.com> writes:

> On Apr 6, 2005 11:36 AM, John Hearns
> <john.hearns at streamline-computing.com> wrote:
>> On Wed, 2005-04-06 at 11:34 +0100, John Hearns wrote:
>> 
>> > Put it on a USB stick. Pop it in the post.
>> Would be a big USB key... Need coffee.
>
> Assuming you have the facilities (i.e. DVD burner) posting a DVD is a
> rather efficient way of transferring data.  Quick back-of-an-envelope
> sums show that if you post it at 5pm and it gets delivered at noon the
> next day - which should happen if you use a first class stamp, even
> with the current state of the Royal Mail - and it's a single full DVD,
> you're looking at a sustained data transfer of almost 70 kilobytes per
> second.  That's significantly faster than my home ADSL upstream, and
> obviously adding another disk or two would make it even more
> efficient, assuming you have that much data to send.

I've never seen a station wagon full of mag.tape, but I did once see
every movable disk (hard and floppy) at a computer camp thrown in the
back of someone's car and driven away at speed (someone told someone
there was a chap from FAST visiting) which was ... interesting.

I once poked a work-experience person to work out the bandwidth of an
oil-tanker filled with DVD's crossing the Atlantic.

Needless to say, the limiting factor was the rate at which you could
load and unload DVD burners...


cheers, Rich

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