The terabyte can be easily explained as a unit of computer memory or data storage capacity equal to 1,024 gigabytes (240 bytes) OR One trillion bytes
History stands testimony that no other technology can boast of being as eagerly anticipated as 1 Terabyte hard drives. These long awaited and much deserved drives have altered the digital landscape forever. Mega bytes to Giga Bytes and Giga Bytes to TeraBytes. The evolution hasn’t been as steadfast as imagined. Yet, thanks to the perpendicular magnetic recording technology, 1 TB has finally hit the floors.
Everybody knows that data is recorded on hard drives platters by a write head through magnetization and demagnetization. Usually the bits thus recorded are placed in a linear fashion. PMR records data by perpendicular arrangement of magnetic bits on the surface of the platter. The north south poles of the magnetic bits on the platters of the disk are not aligned linearly but perpendicularly which enables high density storage due to reater number of bits on the same platter. This technology offers information densities of up to 1 Tbit/sq. inch (1000 Gbit/sq. inch) as opposed to100 to 200 gigabit per square inch offered by linear recording technology.
New breakthroughs in the field of digital media and recording of videos through internet and television have increased the appetite for storage. In spite of this, the need for Tera bytes was fiercely debated time and again. But with their arrival, this question seems to be out of place. Massive storage needs have forced the leading hardware companies to come out with their own 1 TB drives. Hitachi was first in this category followed by Seagate and Samsung. The features of these drives are given below:
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