perpendicular recording


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perpendicular recording

[‚pər·pən¦dik·yə·lər ri′kȯrd·iŋ]
(electronics)

perpendicular recording

A method of digital recording on a magnetic disk in which the bits are in a vertical arrangement instead of horizontal in order to take up less space. Also called "vertical recording," Toshiba and Seagate introduced perpendicular recording drives in the 2005-2006 time frame. Other drive vendors followed, and areal densities reached 400 gigabits per square inch by 2009.

A Trillion Bits Per Square Inch
Heat-assisted magnetic recording (HAMR) combines perpendicular recording with a laser to heat the medium and bumps areal density to a trillion bits per square inch (see HAMR). See superparamagnetic limit and areal density.


Perpendicular (Vertical) Recording
The magnetic flux coming out of the write pole (P2) affects the vertical bit directly below. It goes down through the bit and soft underlayer and back up the return pole (P1).







Longitudinal (Horizontal) Recording
Prior to the perpendicular method, the bits were written horizontally on the recording surface of the disk platter. (Assistance with these illustrations courtesy of Hitachi Global Storage Technologies.)
References in periodicals archive ?
We had perpendicular recording and single magnetic recording (SMR), the next could be the heat assisted magnetic recording and these changes and evolutions in technology could be the key reasons why within the same space we could see hard drives with even higher capacities and those that offer greater performance," he said.
The last technology transition, perpendicular recording, improved areal density by arranging the bits in a perpendicular fashion, thereby enabling narrower data tracks and read/write heads.
Seagate has a long history of being first to market with new technologies such as Serial ATA, perpendicular recording and self-encrypting drives, and is pleased to be teaming with AMD to stage the world's first public demonstration of SATA 6Gb/second storage.
10 drive, the first desktop hard drive to use capacity-boosting perpendicular recording technology, won PC Magazine's 23rd annual Technical Excellence Award for storage.
All 1Tbyte Deskstar models will make use of five platters and employ perpendicular recording technology.
The Seagate ST18 Series hard drive from Seagate, based on perpendicular recording technology, delivers industry-leading capacity and value on a single platter, for 60GB of storage in a compact 1.
Developed in cutting-edge 90-nm CMOS process technology, Agere's new TrueStore RC7200 delivers market-leading perpendicular recording support to expand the amount of storage capacity in a drive to 240 GB/platter.
3 is the world's first notebook disc drive family from Seagate built on perpendicular recording technology, delivering areal density of 13GB per square inch.
That method is called perpendicular recording, which when fully realized over the next five to seven years, is expected to enable a 10-fold increase in storage capacity over today's technology.
As early as 2004, the company plans to roll out materials that use perpendicular recording, which magnetizes the film up and down rather than side to side.
Samsung leads the industry with its implementation of perpendicular recording and three platter 1TB design.
During this time, Seagate introduced perpendicular recording technology and full disk encryption, both of which are used on hard disk drives today.