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En estos tiempos de hipercomunicación bastaría la invitación de enviar a un amigo cualquiera de los textos que consideres interesantes algo redundante: demasiada comunicación, demasiados textos y , en general, demasiado de todo.
Es posible que estemos de acuerdo... pero cuando encuentras algo interesante en cualquier sitio, la red, la calle, tu casa, o un lugar escondido y remoto, compartirlo no sólo es un acto (acción, hecho) de amistad o altruismo, también es una manera de ahorrar tiempo a los demás (y de que te lo ahorren a ti (si eres afortunado) a costa del tiempo que tu has podido derrochar (emplear) y el gustazo de mostrar que estuviste ahí (o donde fuera ) un poco antes (el tiempo ya no es más el que era).
Comparte con tus conocidos aquello que encuentras, es evolución.
Cassette tapes are the future of big data storage
21-10-12 Suggested by: Don Load 

 

THE cassette tape is about to make a comeback, in a big way. From the updates posted by Facebook's 1 billion users to the medical images shared by healthcare organisations worldwide and the rise of high-definition video streaming, the need for something to store huge tranches of data is greater than ever. And while hard drives have traditionally been the workhorse of large storage operations, a new wave of ultra-dense tape drives that pack in information at much higher densities, while using less energy, is set to replace them.


By Paul Marks

Researchers at Fuji Film in Japan and IBM in Zurich, Switzerland, have already built prototypes that can store 35 terabytes of data - or about 35 million books' worth of information - on a cartridge that measures just 10 centimetres by 10 cm by 2 cm. This is achieved using magnetic tape coated in particles of barium ferrite.

But the real debut for this technology is likely to be the Square Kilometre Array (SKA), the world's largest radio telescope, whose thousands of antennas will be strewn across the southern hemisphere (New Scientist, 2 June, p 4). Once it's up and running in 2024, the SKA is expected to pump out 1 petabyte (1 million gigabytes) of compressed data per day.

Current projections by the trade body Information Storage Industry Consortium show that although hard drives will be able to store 3 terabytes a piece in a decade's time, that still amounts to at least 120,000 drives a year.

That annual archive growth would swamp an experiment that is expected to last decades, says Evangelos Eleftheriou of IBM, who is part of a team working to build tapes for the SKA. By the time the telescope comes online, he and colleagues expect to be able to store 100 terabytes on a cartridge of a similar size to their prototype, by shrinking the width of the recording tracks and using more accurate systems for positioning the read-write heads used to access them.

Using tapes should cut down drastically on energy use, too. Data centres based on disc drive arrays use over 200 times more power than would a tape library of similar size, according to a 2010 study by The Clipper Group, a technology consultancy based in Rye, New Hampshire. That's because disc drives in large arrays tend to remain powered-up, so their platters spin continuously, in case data is required, says Jon Hiles of Spectra Logic, a digital archiving firm in Boulder, Colorado. But tape drives only use power when they are being read or recorded on, he says.

The downside of tapes is that they are slower to access than hard discs because they have to be fetched by a robotic mechanism, inserted in a reader and spooled to the right point. But the Linear Tape File System, which is being developed, expedites this process to make it comparable to disc drives, Eleftheriou says.

As storage needs skyrocket, hard drives won't be able to keep up and keep power down, Eleftheriou says. Density improvements in hard drives are facing physical limits that mean they can only add more power-munching platters. "It's time to take advantage of the low power and low cost of tape," he says.


Coming from newscientist





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_HistÓrico_Tecnología

21-10-12_ Cassette tapes are the future of big data storage
22-10-12_ Linus Torvalds Compares Hard Disks to Satan
21-10-12_ Doing with Icons makes Symbols; or, Jailbreaking the Perfect User Interface
30-09-12_ Web 3.0/NanoWar. The Afterimage of the Surveillance State
01-01-11_ El espacio público en la época de la presencia virtual
01-06-10_ How to Keep the Internet Free from Censorship (a call for programmers)
03-05-10_ Dennis Hong: Mis siete especies de robots.
12-07-10_ Collaborative Futures
28-02-10_ CLOUD CULTURE: THE PROMISE AND THE THREAT
29-03-09_ Me llamo Rubén y estoy embarazado
06-09-08_ No hay libertad sin SOFTWARE LIBRE
21-06-08_ Chris Jordan * Picturing excess
27-05-08_ WEB movil * retos por venir
16-04-08_ ¿El colapso de Windows?
02-04-08_ Sobran las EULAS
03-04-08_ Interview with Alessandro Ludovico (Neural Magazine)
20-02-08_ El "hacker" más famoso vuelve a la carga
04-02-08_ En la sala de control
24-03-08_ TOR... el anonimato de la cebolla
22-09-08_ Lev Manovich * Understanding Meta-Media
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27-11-07_ A guide to success
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02-09-07_ Código abierto, código indefenso
28-08-07_ Photospace
25-08-07_ Iphone liberado
03-08-07_ Manipulación de imágenes ;-)
16-07-07_ Omemo + que un disco duro virtual
08-07-07_ Interview * Christine Hill
29-06-07_ Cultura y el cuarto principio del software libre
07-06-07_ M I T  e-news  * June 2007
19-06-07_ Ajax para todos
01-06-07_ The Pirate Bay... ahora vídeo streaming
01-06-07_ Mobile Music Workshop
16-05-07_ Think . Make . Think
13-05-07_ Los cuatro mandamientos de los programas libres
02-07-07_ The author's algorithm
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19-04-07_ Pirates of the Multiplex
15-04-07_UN Zoco para la creación
05-04-07_ Technology retrieves sounds in the wall
22-02-08_ David Cuartielles * Entrevista
22-02-08_ David Cuartielles [ARDUINO] * Entrevista
18-03-07_ La video instalación y el retorno a la obra única
08-03-07_ Piracy Documentary: On Piracy & the Future of Media
06-03-07_TAGallery | THE ART Gallery
03-03-07_ Magic weed * History of Marijuana
22-02-07_ Angelo Vermeulen * Interview
04-02-07_ Probar diseños en diferentes navegadores
02-02-07_ Linux is not Windows
29-01-07_ How to Find Fake Torrents Uploaded by the MPAA and RIAA
29-01-07_ Adam Greenfield * Interview
19-01-07_ Los niños prodigio de Pierre Jaquet-Droz
18-01-07_ PURE:DYNE aka XP->XtendedPanic Fucker
13-01-07_ How to do research
19-01-07_ Sealand Won't be Sold to Pirates
07-01-07_ Internet Explorer fue inseguro 284 días de 2006, Firefox sólo 9
02-01-07_ Douglas Rushkoff Interview
01-01-07_ 23C3: On Free, and the Differences between Culture and Code
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15-12-06_ Bill Gates on the future of DRM
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20-07-06_Interview of W. James Au AKA Hamlet Au
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06-07-06_Rewired brain' revives patient after 19 years
30-06-06_The Wired 40
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07-06-06_Pirate Bay Bloodied but Unbowed
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05-06-06_Music Phones Want to Be Free
23-05-06_DIY: construyendo un transmisor de Televisión
05-06-06_A Guide to the Online Video Explosion
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11-05-06_¿Se rompe Internet?
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07-06-06_A Grand Unified Theory of YouTube and MySpace
07-06-06_Who Needs the DJ?
04-05-06_Hattori Hanzo
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13-03-07_ Descargas ilegales
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23-03-06_Los trucos del 11888
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29-10-05_Arte digital / Arte contemporaneo
07-08-06_Primer.

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