Klint Gore írta:
> Scott Marlowe wrote:
>> On Mon, Dec 1, 2008 at 10:42 PM, Joshua D. Drake
>> <jd@commandprompt.com> wrote:
>> > On Tue, 2008-12-02 at 00:37 -0500, Greg Smith wrote:
>> >> Tom on things that might ruin his tape backups:
>> >>
>> >> "Then of course there are the *other* risks, such as the place
>> burning to
>> >> the ground, or getting drowned by a break in the city reservoir
>> that's a
>> >> couple hundred yards up the hill...Or maybe being burgled by Oracle
>> >> employees who are specifically after my backup tapes."
>> >
>> > What is a tape?
>>
>> Apparently something to do with backups. But I don't know what those
>> are either... :-P
>>
>
> "Never underestimate the bandwidth of a station wagon full of tapes
> hurtling down the highway." —Tanenbaum, Andrew S. (1996). Computer
> Networks. New Jersey: Prentice-Hall, 83. ISBN 0-13-349945-6.
But the latency of a truck is awful :-)
> A modern chrysler town and country(1) has a cargo capacity of 140.1
> cubic feet(2) letting it carry 17163 LTO4 (3) tapes at 800GB each.
> Thats 13730TB. Say it has to get from San Francisco to LA (about 6 hrs
> according to google maps directions(4)), that gives 2288TB/hour, or
> 5.1 terabit/second.
>
> klint.
>
> 1. its more of a minivan than a station wagon these days but close
> enough. halve the number of tapes if you're thinking of the classic
> "woodie" http://www.allpar.com/old/townandcountry.html
> 2.
> http://www.chrysler.com/hostc/vsmc/vehicleSpecModels.do?modelYearCode=CUC200908
>
> 3. dimensions from http://en.wikipedia.org/wiki/Linear_Tape-Open
> 4.
>
http://maps.google.com/maps?f=d&saddr=san+francisco&daddr=los+angeles&hl=en&geocode=&mra=ls&sll=37.0625,-95.677068&sspn=58.598104,116.542969&ie=UTF8&ll=35.939855,-120.330885&spn=7.601811,14.567871&z=7
>
>
--
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Zoltán Böszörményi
Cybertec Schönig & Schönig GmbH
http://www.postgresql.at/