Perpendicular Recording

The need for hard disk storage not only used on the PC. Some consumer electronics also requires hard disk. For example, portable multimedia player competing offers greater capacity, or a mobile phone that supports multimedia. If on the PC, hard drive capacities are required to have a greater hold, then the consumer electronic physical size required to trigger the development of technology mengecil.Ini used hard drive. Technology solutions that are used is perpendicular recording.

Why is perpendicular Recording Necessary?

Disk stores data on a magnetic plate. This is a major challenge for producers hard disk, which is designing a storage medium magnetic reliable. Where the size of a magnetic region, is proportional to the energy required to demagnetized. The larger magnetic region, the more stable data. This of course is reversed with the needs of storage media, who crave large capacity, without increasing the size dimension big. Physical size or smaller with large data.

There is a minimum limit of a magnetic region will remain stable at room temperature. If less than the minimum limit, then the magnetic region will be easily changed at random magnetic poles. Perpendicular recording is the alternative used, because this technique does not reduce the size of the magnetic regions. Just change the layout orientation, in order to more efficiently use this terbatas.Hal place that can not be achieved by relying on longitudinal recording, as used on the hard drive for this.

How does perpendicular recording?

Change direction perpendicular recording bits on the pole orientation of magnetic elements. Compared to longitudinal (standard) recording, the direction parallel to the magnetic poles plate on the disk. While in perpendicular recording, the magnetic pole pointing perpendicular to the plate. More specifically, can be seen in the illustration.

By setting the magnetic polar regions are perpendicular (perpendicular) of the surface of the media, making the distance between regions even closer. Indirectly also reproduce the data capacity, in a same surface area.
To apply this method requires an additional layer. Material used in this additional layer, useful to set the direction of the magnetic pole orientation.

This layer lies between the pieces of plate, and the magnetic layer of the film. By using the perpendicular recording method, allowing the use of magnetic materials, with the coefficient of magnetic (coercivity) is higher. This means that the magnetic field takes a larger, to be able to change the existing magnetic field. Or in short, more stable. It allows the use of materials with magnetic grains, which require magnetic regions are much smaller. Thus overall, perpendicular recording will heighten the level of data density, on each chip used.

The use of perpendicular recording.

Toshiba is the first manufacturer to produce a perpendicular recording hard drive with a 1.8 inch form factor, in the year 2005. Unfortunately, These products have problems in terms of stability and reliability of data. In January 2006, Seagate produces harddisik with this technology, intended for notebooks with 2.5-inch form factor. Seagate Momentus 5400.3 is the first product. Starting from here, Seagate will introduce the use of this technology, the next most hard drive products.

Of course, this step was followed by the other hard drive manufacturer. Seagate began to introduce 3.5-inch hard drive with perpendicular recording, in April 2006. Cheetah 15K.5 begins with a capacity of 300 GB, the rpm for spindle15.000 speed SCSI interface. This hard drive is claimed to have increased performance up to 30%, compared to the previous Cheetah series. For ATA interface, Seagate Barracuda 7200.10 to start with. Hard drive with 3.5-inch form factor, with a maximum capacity of 750 GB.

Toshiba also uses perpendicular recording to harddisk2, 5-inch, 200 GB capacity. This product was announced in June 2006, but the new will available on the market in August 2006. This will provide an opportunity to notebook users, to use the hard drive with 200 GB capacity. Fujitsu will begin to inform using perpendicular technology recording in August 2006, starting with 2.5-inch hard drives, with SATA interface, capacity of 160 GB. Hitachi Microdrive will apply to the capacity of 20 GB, and 1 TB for 3.5-inch hard drive. This product will be available in the year 2007.