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Fujitsu announces technology for future hard drive capacity expansion

Fujitsu of America announced another advancement in its research of magnetic recording. Using patterned media technology, Fujitsu was able to achieve a one-dimensional array nanohole pattern with a 25 nanometer pitch. This process could one day enable one terabit per square inch recording on HDDs. Fujitsu also revealed a new development involving perpendicular magnetic recording read/write operation on random patterned media. With this technology, the soft underlayer is used as the PMR media, another important milestone.

A density of one terabit per square inch is about five times greater than the current drive technology on the market. Applying a one terabit areal density figure to today’s drive sizes would give us 3.5” drives capable of storing 5TB or 2.5” notebook drives holding 1.5TB.

Fujitsu first announced innovations with patterned media recording in June 2005. At that time, advancements were made with the introduction of a process to pre-pit aluminum media, resulting in nanoholes with an extremely dense and ordered structure. In addition, a technique called land/groove texturing allowed for the creation of discrete tracks in which the nanoholes could be formed. This progress in patterned media has enabled the development of high capacity hard disk drives, especially in smaller form factors.

This progress in patterned media recording closely follows the November 2006 Fujitsu announcement regarding the optical element being developed for thermal assisted recording, another promising advancement for future capacity increases.



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RE: So what
By masher2 (blog) on 1/24/2007 1:28:16 PM , Rating: 2
> " It is no where near as simple as you are trying to make it sound."

Nowhere did I "make it sound" as if increasing areal density was a simple process. In general, for bit densities to increase, advances must be made in several areas besides the platters themselves. That goes without saying.

My original statement still stands. The vast majority of improvements in hdd performance come from increased areal density. That increased density, in turn, comes from advancements in many other areas true. Butut the fact remainds that those technologies improve performance only by increasing areal density, or some other performance factor I listed above.

> "And one of these days I am going to figure out where the heck you get your information..."

With age cometh wisdom. :p


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