perpendicular recording


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perpendicular recording

[‚pər·pən¦dik·yə·lər ri′kȯrd·iŋ]
(electronics)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

perpendicular recording

The common method of magnetic disk recording in which vertical bits take up less space than horizontal bits. Also called "vertical recording," Toshiba and Seagate introduced perpendicular recording drives in the 2005-2006 time frame. Other vendors followed, and densities reached 400 gigabits per square inch by 2009. See areal density.

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 more than a trillion bits per square inch (see HAMR). See superparamagnetic limit.


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







Longitudinal (Horizontal) Recording
Before the perpendicular method, the bits were written horizontally on the disk platter. (Assistance with these illustrations courtesy of Hitachi Global Storage Technologies.)
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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.
Hono, "Particulate structure of L 10 ordered ultrathin FePt films for perpendicular recording," Applied Physics Letters, vol.
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."
The award comes just weeks after Barracuda 7200.10 drive, the first desktop hard drive to use capacity-boosting perpendicular recording technology, won PC Magazine's 23rd annual Technical Excellence Award for storage.
Models equipped with the SATA interface offer 32Mbytes of onboard buffer memory.The silent version of the drive, known as the Cinemastar 7K1000, targets users interested in quiet drives for home-theatre PCs and digital video players.All 1Tbyte Deskstar models will make use of five platters and employ perpendicular recording technology.Perpendicular recording is a method of storing data perpendicularly (at a 90-degrees angle) on data platters rather than longitudinally.
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 1.8-inch hard disc drive.
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.
According to the company, Momentus 5400.3 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.
They are also looking at patterned media and perpendicular recording, where the magnetic bits are written perpendicular to the film surface.