Proboj u tehnologiji hard diskova?

[peja81]

Physicists 'record' magnetic breakthrough
February 7, 2012

An international team of scientists has demonstrated a revolutionary new way of magnetic recording which will allow information to be processed hundreds of times faster than by current hard drive technology.

The researchers found they could record information using only heat - a previously unimaginable scenario. They believe this discovery will not only make future magnetic recording devices faster, but more energy-efficient too.

The results of the research, which was led by the University of York's Department of Physics, are reported in the February edition of Nature Communications.

York physicist Thomas Ostler said: "Instead of using a magnetic field to record information on a magnetic medium, we harnessed much stronger internal forces and recorded information using only heat. This revolutionary method allows the recording of Terabytes (thousands of Gigabytes) of information per second, hundreds of times faster than present hard drive technology. As there is no need for a magnetic field, there is also less energy consumption."

The multinational team of scientists included researchers from Spain, Switzerland, Ukraine, Russia, Japan and the Netherlands. Experimental work was carried out at the Paul Scherrer Institut in Switzerland, the Ioffe Physical Technical Institute of the Russian Academy of Sciences and Radboud University Nijmegen, Netherlands.

Dr Alexey Kimel, from the Institute of Molecules and Materials, Radboud University Nijmegen, said: "For centuries it has been believed that heat can only destroy the magnetic order. Now we have successfully demonstrated that it can, in fact, be a sufficient stimulus for recording information on a magnetic medium."

Modern magnetic recording technology employs the principle that the North pole of a magnet is attracted to the South pole of another and two like poles repulse. Until now it has been believed that in order to record one bit of information – by inverting the poles of a magnet – there was a need to apply an external magnetic field. The stronger the applied field, the faster the recording of a magnetic bit of information.

However, the team of scientists has demonstrated that the positions of both the North and South poles of a magnet can be inverted by an ultrashort heat pulse, harnessing the power of much stronger internal forces of magnetic media.

Provided by University of York

http://www.physorg.com/news/2012-02-physicists-magnetic-breakthrough.html

 

[Rapture]

Koliko sam razumeo ovo se odnosi samo na upis podataka, ali da li vazi i za citanje podataka?

 

[Beagle]

Verovatno ne. Ne vidim nijedan logican nacin na koji bi se toplota koristila za ocitavanje podataka.

 

[Rapture]

Onda je ova novotarija relativno korisna, jedino u slucaju kopiranja sa ssd-a na hd .

 

[Beagle]

Nije ni tad. Oni obecavaju terabajte po sekundi, a te brzine ne moze da postigne ni L1 kes memorija, a kamoli ubogi SSD

 

[Rapture]

Dobro, opet je ssd brzi od drugog hd-a .

 

[3ebc]

Dobro, opet je ssd brzi od drugog hd-a .

Ako uzmemo ovu vest zdravo za gotovo tu pise da bi ovo omogucilo upis stotinama puta brze od danasnjih (hard) diskova, sto ce reci u sekvencijalnom pristupu oko 20x brze od ssd-a.

Neko pomenu da je to sporije od L1, sto je apsolutno netacno ovde se pominju brzine od oko 10GB/s a L1 ima upis od oko 60GB/s (sandy) a citanje od oko 120GB/s

 

[Beagle]

This revolutionary method allows the recording of Terabytes (thousands of Gigabytes) of information per second, hundreds of times faster than present hard drive technology

E sad ne znam odakle ti tih 10GB/s, ja nisam nigde to video u tekstu koji je Misko okacio.

 

[3ebc]

E sad ne znam odakle ti tih 10GB/s, ja nisam nigde to video u tekstu koji je Misko okacio.

Iz ove recenice:

This revolutionary
method allows the recording of Terabytes
(thousands of Gigabytes) of information per
second, hundreds of times faster than present
hard drive technology.

Danasnjom tehnologijom diskovi mogu da upisuju oko 100MB/s, malo vise na pocetku diska, solidno manje na kraju, ali to u kombinaciji sa “stotine puta vise“, daje ugrubo oko 10GB/s.

 

[Beagle]

Ti si samo pomnozio 100 sa 100. "Hundreds" je mnozina, te moze da bude i 900, pa da ispadne brzina od ~90GB/s.

PS Ovo je obicno natlapanje, najverovatnije su oni opalili laserom po jednom magnetnom dipolu i skontali da mogu da mu promene stanje, pa teoretisu o mogucim brzinama.

A i pitanje je da li ce ovo ikad zaziveti.

 

[c-p-r]

Neka vrate cene pa cemo onda da citamo ovakve vesti.

 

[OCz]

Koji je ovo vec "proboj" po redu u zadnje dve godine koji slusamo o HDD-ovima ?