perpendicular recording

(redirected from Perpendicular magnetic recording)
Also found in: Acronyms.

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 ?
8-inch form factor, using perpendicular magnetic recording (PMR) technology, which Toshiba introduced and commercialized in 2005.
5-inch hard disk (HD) media with storage capacity of 500 gigabytes per disk, using the fourth-generation perpendicular magnetic recording (PMR) technology.
Proven perpendicular magnetic recording (PMR) technology helps to ensure maximum stability, reliability and data integrity
89-inch hard disk (HD) media with storage capacity of 120 gigabytes per disk, using the fourth-generation* perpendicular magnetic recording (PMR) technology.
3-inch hard disk (HD) media with storage capacity of 40 gigabytes per disk, using the innovative perpendicular magnetic recording (PMR) technology.
89-inch hard disk (HD) media with storage capacity of 80 gigabytes per disk, using the innovative perpendicular magnetic recording (PMR) technology.
5-inch hard disk (HD) media with storage capacity of 334 gigabytes per disk, using the innovative perpendicular magnetic recording (PMR) technology.
It utilizes perpendicular magnetic recording (PMR) technology, and the disk drive design has been optimized to allow ultra-precision adjustment of the head parking ramp position for high-density recording.
Engineered using perpendicular magnetic recording (PMR) technology - essential towards achieving increased capacity per platter - the new small form factor HDDs will commence a new wave of next-generation high-capacity enterprise, mobile and consumer storage solutions, addressing the growing demand for higher-capacity storage solutions.
With its latest drives, the company has further enhanced durability and increased data capacity, using perpendicular magnetic recording (PMR) to boost areal recording density and to raise storage capacity to 80GB (MK8050GAC and MK8050GACE), double that of Toshiba's current automotive drives(b) .
At the new plant in Singapore, we have installed the first production line within a clean room based on our innovative perpendicular magnetic recording (PMR) technology.
Perpendicular Magnetic Recording (PMR) with Samsung's Flying on Demand (FOD) head technology improves recording stability over changing temperature ranges.