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.