Two-dimensional magnetic recording is a technology introduced in 2017 in hard disk drives used for computer data storage. Most of the world's data is recorded on HDDs, and there is continuous pressure
General concept for TDMR using multiple read elements
First implementation of TDMR in a product (2017)
Disk read-and-write head
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A disk read-and-write head is the small part of a disk drive that moves above the disk platter and transforms the platter's magnetic field into electric current or, vice versa, transforms electric cur
Two-dimensional magnetic recording
…a given HDD form-factor and for a given cost. In an HDD, data is stored using magnetic recording on a rotating magnetic disk and is accessed through a write-head and read-head (or read-element). TDMR allows greater storage capacity by advantageously combining signals simultaneously from multiple read-back heads to enhance the recovery of one…
A hard disk head and arm on a platter
Microphotograph of a hard disk head. The size of the front edge is about 0.3 × 1.2 mm. The functional part of the head is the round, orange structure in the middle. Also note the connection wires bonded to gold-plated pads.
Read–write head of a 3 TB hard disk drive manufactured in 2013. The dark rectangular component is the slider and is 1.25 mm long. The platter surface moves past the head from right to left.