what's hard drive

<< A hard disk >> 

Hard Drive: A plate / disk data files on a metal rotating magnetic pulses that a storage device (storage).As a component leading virtual computer, the hard drive is also somewhat mysterious.· Hard drive on your computer is a long-term storage media.On the increase every year a new type of hard disk capacity storage (80GB is the biggest today), but the physical size of the drive remains relatively unchanged.· The faster a drive spins, the faster you will have access to and transfer data.· Large capacity hard drives in the market, to take down a drive (usually measured as the number of megabytes per dollar), with a growing number of cost.All modern computers hard drive provides data storage is essential. The rotation movement through a magnetic layer surface of the disk material by placing a magnetic field stores information on a hard disk.Mangetik point on the surface of a hard disk as a disk to store digital data. One piece (one piece of data, as it is written) the disc is magnetized in a direction opposite the direction indicated by the value 0 and 1.Everyone in a hard disk platter (plate / metal album called). A large-capacity hard disk, a 3.5 inch diameter, usually as a storage medium that uses both sides of the plate. 4,500 to 15,000 revolutions per minute Drivenya rotate only in the engine speed.Each hard drive tray surface for writing and reading data from the 'head' a recorder for use. At a microscopic distance above the surface of each side plate can move an arm bergantun, leading to head position. If the hard disk drive for five to ten pieces of hand motor based on ten heads.Other elements in the head a little reference as it passes through the magnetic field magnetic sensing elements read every data input reads.The so-called "chunk" write data to a concentric circle with the car, and "zones" in areas known as divide each track. 

<< How To Work Hard Drives >>  

Recording an operating system sends data to the hard disk, and then drive an additional piece of data in the process adds the data using a complex formula.Then, the plate drive head moves in the right path. Time to move the head "search time" is called. The long "latency traffic" is called. Looking `` `and` less latency, faster movement completed its work.Electron units write data to a head in the jurisdiction determines when the drive head sends electrical impulses. On the surface of the plate magnetic pulse generates a magnetic field that changes. Now enter the data represent fluctuations.Reading data requires the registration process. Seleai drive if necessary, the operating system then sends the data to investigate and fix errors in bits.

 << Interface; What is this? >>

 Interface hard drive simply the exchange of data between computers and hard drives is hardware management. Advanced Attachment Technology, interface ATA (or IDE, integrated electronic devices) is also known as a kind of interface to the computer that usually encountered in practice. The second most popular interface server and Apple Macintosh computers are widely used to drive the old formula used for the SCSI (Small Interface System Component) is.8.3 MB per second, the first ATA interface supports a maximum transfer speed. ATA -2 16,6 MB per second increases maximum flow. Although not an official standard, Ultra DMA and Ultra DMA transfer rate is generally from -33 to 66, respectively, with 33MB per second and 66MB per second interface is recognized by the HDD industry. 

<<Pushing hard drives using Deals >>
With the latest hard disk drive can store data up to 70GB. Smaller 2.5-inch notebook hard drives can store data up to 25GB.

<< Specific tasks for the Special Operations  >>
 To top desktop consumer market axia.apodosis (price-performance) represents. 7200-rpm drive with high performance jobs in general, and in the following year, is the normal speed 10.000 rpm.Notebook computer market, the most important thing is to conserve electricity. Disk spins slowly drives reduce power consumption of the battery for laptops. Platternya because of their small size compared to desktop drives left behind a notebook Power storage unit.In the market for server, is the most important goal.

 << Price always below  >>
Over the past three years, despite the increased capacity of the hard disk prices have plummeted.The value of U.S. $ 1,000 desktop systems usually should get a minimum price for the system, 8GB or highest bid campaign. But one seller estimates, over the next five years, the price will increase slightly in proportion to the computer hard drive that is assigned. Continuously maintained in the cost of hard drives, the price will fall, while the other ingredients. Not a bad word: increases efficiency, megabytenya is to reduce the cost per.Drive. As of this writing, an online computer store with prices lower than the U.S. $ 200 30GB Maxtor DiamondMax hard drives they can find. Money of U.S. $ 260, while you can get a 40GB drive Maxtor. IBM servers business, with prices ranging from US $ 500 for 75GB, with the ability to drive sale 
If you buy a new campaign, which usually leads vendors and shops "maximum transfer speed" or "speed burst" may sell out. The price does not mean anything, just describing the specification of the interface to the car. 

<< Hard Drive Future  >>
This large capacity, disk capacity doubles every 18 months gives strength of giant magnetoresistive head (GMR), in terms of market development. In the next five years, technology GMR every 12 months will be able to double the capacity of the hard drive.Furthermore, vendor and fight the laws of physics to create a smoother dish and a small head must find a way to learn. And the type of storage for the storage company moves to the last discovery. However, according to one of the hard drive vendors, the industry has a bright future, especially for their customers.