Seagate is testing hard drives with 8 terabytes of capacity

The company announced its plan to produce hard drives with these capabilities in May this year, but without giving prediction of large-scale manufacturing. The few existing units are only for testing, why were sent to companies that control data centers: besides being able to give accurate feedback on the performance of hard drives, these companies appear to be the most interested in this type of equipment.

Getting increasingly compress data on the disks without increasing the physical size has always been a challenge for the industry. And the more capacity manufacturers can deliver, the harder it is to overcome it in later models.

That’s why these units 8 terabytes cause astonishment, after all, that “magic” used for the Seagate 3.5-inch hard drives have storage space size? For now, it’s a secret, as the company has refused to comment on the matter.


One hypothesis is that Seagate has increased the density of discs, but with current technology it is almost impossible to do so. It may also be that the company has managed to put more drives into the unit, but there are serious physical limitations to it.

More likely is that the company has implemented a new data recording technology, which would increase the density of the discs and at the same time preserving its physical dimensions.

More precisely, we may be talking of HARM , a technique that uses a laser beam on the recording head which has a very small wave length, allowing more data to be inserted into the same space limit.

The HARM is, to some extent, a technique that resembles the technology that differentiates DVD Blu-ray. At first, the laser wavelength is usually 650 nm; the second, of 405 nanometers. Thus, the laser can focus Blu-ray disk recording structures with greater precision, allowing these points are smaller and therefore exist in greater quantity in the media.

When we, as end users, we will have access to units of 8 TB, and possibly 10 TB? Seagate does not confirm, but based on statements made ​​by  Steve Luczo,  CEO of the company, it may happen only from May 2015 prices, of course, are not the most inviting, but will certainly cost per gigabyte much more attractive than in SSDs.

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