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Here's one for you:
A single-layer DVD apparently holds about 4.7 GB of data. So ten of them
would hold about 47 GB.
That means that if I burn 10 DVDs and mail them to somebody, and it
takes 2 days for them to arrive, I have just achieved an average data
transfer rate of about 1 GB/hour. (About 0.2 MB/sec.)
But hey, why burn 10 DVDs when you can just buy a cheap HD and mail
that? (I'm guessing at this point the weight starts to become
takes 2 days for that to turn up, that's around 23 Mbit/sec -
significantly faster than any possible broadband connection.
rate!
On the other hand, if it takes 4 days to arrive, I just halved the
transfer rate. And the latency is, of course, abysmal...
I found the following quote on Wikipedia:
"The theoretical capacity of a Boeing 747 filled with Blu-Ray discs is
595,520,000 Gigabits, resulting in a 37,034.826 Gb/s flight from New
York to Los Angeles."
Somebody bothered to compute this?!? o_O
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On Thu, 29 Apr 2010 14:01:26 +0200, Invisible <voi### [at] dev null> wrote:
> for that to turn up, that's around 23 Mbit/sec - significantly faster
> than any possible broadband connection.
Less than a quarter of the bandwidth I have had at home for several years.
> "The theoretical capacity of a Boeing 747 filled with Blu-Ray discs is
> 595,520,000 Gigabits, resulting in a 37,034.826 Gb/s flight from New
> York to Los Angeles."
>
> Somebody bothered to compute this?!? o_O
Yet they failed to account for the time needed to record the three million
discs.
--
FE
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>> for that to turn up, that's around 23 Mbit/sec - significantly faster
>> than any possible broadband connection.
>
> Less than a quarter of the bandwidth I have had at home for several years.
Which country do *you* live in? According to my data, ADSL has a maximum
speed of 8 Mbit/sec, and even ADSL2 stops at 12 Mbit/sec. So where on
God's Earth are you getting 23 Mbit/sec from?
>> "The theoretical capacity of a Boeing 747 filled with Blu-Ray discs is
>> 595,520,000 Gigabits, resulting in a 37,034.826 Gb/s flight from New
>> York to Los Angeles."
>>
>> Somebody bothered to compute this?!? o_O
>
> Yet they failed to account for the time needed to record the three
> million discs.
Yes... It strikes me that if you really wanted to do this, you wouldn't
use BluRay disks, you'd use harddrives. (Much faster to access, and less
bunky too.)
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On Thu, 29 Apr 2010 16:06:22 +0200, Invisible <voi### [at] devnull> wrote:
> According to my data, ADSL has a maximum speed of 8 Mbit/sec, and even
> ADSL2 stops at 12 Mbit/sec. So where on God's Earth are you getting 23
> Mbit/sec from?
Why do you assume I am using ADSL?
http://en.wikipedia.org/wiki/FTTB
Even if I did use ADSL(2+), I would still be able to get 24 Mbps.
--
FE
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Fredrik Eriksson wrote:
> Why do you assume I am using ADSL?
>
> http://en.wikipedia.org/wiki/FTTB
>
> Even if I did use ADSL(2+), I would still be able to get 24 Mbps.
I assumed it wouldn't be FTTB or ADSL2+ because, as far as I'm aware,
nobody has actually deployed these technologies yet. I've read about
companies who say they're *going* to do it someday, but I'm not aware of
anywhere that has actually *done* so yet.
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> I assumed it wouldn't be FTTB or ADSL2+ because, as far as I'm aware,
> nobody has actually deployed these technologies yet. I've read about
> companies who say they're *going* to do it someday, but I'm not aware of
> anywhere that has actually *done* so yet.
ADSL2+ is available pretty much everywhere here in Germany. If I paid 10
euro more per month I could have 16 Mbit/s instead of 8. Also if I lived
about 5 km closer to Munich I could get VDSL2 which is 50 Mbit/s :-D
It seems some companies are using ADSL2+ in the UK in limited areas:
http://en.wikipedia.org/wiki/ADSL2%2B#United_Kingdom
In some UK places you can also get internet via cable (I had this while I
lived in Oxford). Last time I checked you could get 10 Mbit/s that way,
probably higher now.
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>> I assumed it wouldn't be FTTB or ADSL2+ because, as far as I'm aware,
>> nobody has actually deployed these technologies yet. I've read about
>> companies who say they're *going* to do it someday, but I'm not aware
>> of anywhere that has actually *done* so yet.
>
> ADSL2+ is available pretty much everywhere here in Germany. If I paid
> 10 euro more per month I could have 16 Mbit/s instead of 8. Also if I
> lived about 5 km closer to Munich I could get VDSL2 which is 50 Mbit/s :-D
50 Mbit/sec... That's just trippy.
If they ever do replace all the copper with fiber, access to the
Internet should get a lot faster. (I always thought it was silly that I
was accessing the Internet using an infrastructure designed for narrow
bandwidth voice coms, but hey...) Don't hold your breath for that
anytime soon.
> It seems some companies are using ADSL2+ in the UK in limited areas:
It says which companies, doesn't seem to say where. Presumably only
inside London at the moment.
> In some UK places you can also get internet via cable (I had this while
> I lived in Oxford). Last time I checked you could get 10 Mbit/s that
> way, probably higher now.
I've only seen one person who had this, and she was on 2 Mbit/sec.
Still, one person isn't a large sample size, and it was a while ago now.
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On Thu, 29 Apr 2010 16:32:49 +0200, Invisible <voi### [at] devnull> wrote:
>
> I assumed it wouldn't be FTTB or ADSL2+ because, as far as I'm aware,
> nobody has actually deployed these technologies yet.
As usual, you assume incorrectly.
> I've read about companies who say they're *going* to do it someday, but
> I'm not aware of anywhere that has actually *done* so yet.
You need to read more.
http://en.wikipedia.org/wiki/ITU_G.992.5#Deployment
http://en.wikipedia.org/wiki/Fiber_to_the_premises_by_country
--
FE
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>> I've read about companies who say they're *going* to do it someday,
>> but I'm not aware of anywhere that has actually *done* so yet.
>
> You need to read more.
>
> http://en.wikipedia.org/wiki/ITU_G.992.5#Deployment
> http://en.wikipedia.org/wiki/Fiber_to_the_premises_by_country
...so it's just a case of the UK being behind the rest of the world then?
(Also, notice how Fibercity is being trialled in Bournemouth,
*Northampton* and Dundee. Not Milton Keynes, but Northampton. God only
knows why everything happens in Northampton, not Milton Keynes...)
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Invisible wrote:
> significantly faster than any possible broadband connection.
http://aws.amazon.com/importexport/
--
Darren New, San Diego CA, USA (PST)
Linux: Now bringing the quality and usability of
open source desktop apps to your personal electronics.
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