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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 bigdaddy on 1/24/2007 3:35:44 PM , Rating: 2
Hard drive space is only relevent to the individual. For people who need large amounts of space, then this is a great leap forward.

But there are a lot of areas where speed is by far more important than size. If you have a large SAN that have a high number of user accessing it, the IOPS on the drive will be high. That's why spindle-based drives will become a thing of the past. Scandisk just released last week a 32 GB Solid State Drive. No moving components. It is also so much faster than any normal hard drive.

For example take a 15k SCSI drive. Now a decent seek time would be anywhere from 2 to 3.5 ms. Yet there is still the delay time for the platters. Which would be usually 2 ms, even on a fast 15k drive. So you may have a total of 5 ms on average and has an access of about 170 IOPS. Even though this looks great from any SATA drive (usually ends up being about 12 ms seek time in total and about 100 IOPS), it doesn't even compare to a Solid State Drive. The scandisk 32 GB SSD has a seek time of 0.12 ms. Compare that to 5 ms. And reads at about 7000 IOPS.

So I think that eventually SSD will become the winner for hard drive space since it's so much faster and will last much longer since there are no moving parts.


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