Re: Favorite Tom Lane quotes
От | Picavet Vincent |
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Тема | Re: Favorite Tom Lane quotes |
Дата | |
Msg-id | EB18254270D1FD429047C987937D4A12038E0591@s92e07497.ad.mediapost.fr обсуждение исходный текст |
Ответ на | Favorite Tom Lane quotes ("Scott Marlowe" <scott.marlowe@gmail.com>) |
Ответы |
Re: Favorite Tom Lane quotes
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Список | pgsql-general |
Hi, > "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. > > 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. That seems to be kind of a joke, but I heard that the french CNES (spatial agency) is doing some huge database replicationbetween two sites thanks to big trucks carrying the data once a month, because current network devices transferrates do not allow them to do remote replication through the network. Or maybe the reasons to this method are notonly technical but economical. I have no detailed information on this, and it's more a rumour than a verified information, but should somebody know moreon the subject, i'd be interested in hearing it. Vincent
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