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HGST promises to double disk platter density thanks to 10nm breakthrough

HGST announced that it has managed to create and replicate “dense patterns of magnetic islands” that are only 10nm wide through the combination of self-assembling molecules and nano-imprinting. Tests carried out in a controlled environment by HGST also showed that it had excellent initial read/write and data retention capabilities.

This, the company says, will double the data density of today’s hard disk drives. Current 4TB hard disk drives (the highest capacity on the market) have a platter capacity of 1TB, which translates into an areal density of 625Gb per square inch.

Doubling the density means that 2TB platters should become common place fairly soon, which in turn could help build 10TB hard disk drives (HGST’s 4TB hard drives actually use five 800GB platters).

Back in October 2011, a team of engineers based in Singapore announced that they were able to push the data density of disk platters to a whopping 3.3 terabits per square inch, using none other than table salt.

And last year, Seagate said that it would be able to produce, using heat-assisted magnetic recording technology, platters with an areal density of 1tb per square inch with a view of decupling that to 10 terabits per square inch by the end of the decade.

Désiré Athow

Désiré has been musing and writing about technology during a career spanning four decades. He dabbled in website building and web hosting when DHTML and frames were en vogue and started writing about the impact of technology on society just before the start of the Y2K hysteria at the turn of the last millennium. Following an eight-year stint at where he discovered the joys of global tech-fests, Désiré now heads up TechRadar Pro. Previously he was a freelance technology journalist at Incisive Media, Breakthrough Publishing and Vnunet, and Business Magazine. He also launched and hosted the first Tech Radio Show on Radio Plus.