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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 semo on 1/24/2007 12:16:52 PM , Rating: 2
i know hdds themselves have improved. i am talking about the concept of mass storage on pcs. perpendicular recording and hybrids are pretty big improvements but i still think the hdd is the biggest bottleneck (not counting non-system critical components such as optical drives and mlc flash).

quote:
Today's hard drives are 10,000 larger and 20,0000 faster than the drives of 20 years ago
i would say hdds have higher digital bandwidth but wouldn't call them faster. we still measure their seek times in ms.


RE: So what
By semo on 1/24/2007 12:40:33 PM , Rating: 3
also, your first quote takes my comment out of context. of course areal density increases improve hdds' performance but what i meant was that those increases are small compared to performance increases in other components.

example of what i'm trying to say... let's go back in time a few years and look at a athlon64 or pentium 4 when better performance was achieved almost exclusively from higher clocks.

so, we take a cpu and run a cpu intensive benchmark. we also run a hdd intensive benchmark on the hdd.

now replace the hdd with one that has twice the areal density and a cpu with double the clock rate and repeat the respective benchmark tests.

i'm just trying to illustrate my point with this crude example and nothing more.


RE: So what
By masher2 (blog) on 1/24/2007 12:55:50 PM , Rating: 2
> "your first quote takes my comment out of context."

I'ts pretty hard to take the statement that "white goods see more innovation than hard drives".

"what i meant was that those increases are small compared to performance increases in other components...."

Nothing on the planet increases in performance as fast as cpu chips. Compared to them, everything else is a "small advance". The fact remains that hard drive performance increases dramatically year after year, and innovation proceeds at a blinding pace.

> " I wouldn't call [hdds] faster..."

Now this is just plain silly. Go dig up an old 40MB 3600rpm drive and see just how slow it really is.



RE: So what
By patentman on 1/24/2007 12:45:32 PM , Rating: 2
Suprisingly, the concepts behind perpendicular recording and nanodot media are not all that different. Indeedc, both technologies improve area recording density by reducing the footprint over which an oriented doman exists.

Also, although I doubt the accuracy of Masher2's numbers, he is correct in saying that drive speeds have increased a tremendous amount in the last 25-30 years. The original hard disk was the size of a record player, and had a rotational speed about as fast as an old 45. We are recording now in the low milliseconds, which is extremely fast compared to the media of old.

You have to realize that reading and writing data is not as simple as storing an electron in logic circuit. Sure, the effect is the same (orientation of the Domain indicates a 1 or a 0), but the manner in which that domain gets oriented is actuall very complex relative to sticking an electron in memory. Low milliseconds is blazing fast considering all of the operations that have to go on to orient the domain, and all the balances that have to be struck to ensure that the domain stays in that orientation until it is re-written.


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