A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape; a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction; and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.

A recording and reproducing apparatus includes: a magnetic head in which a servo band having a servo pattern and a data band having data tracks are alternately arranged along a width direction, the magnetic head including a recording and reproducing element that records or reproduces data with respect to the data track, and at least two servo reproducing elements that read servo patterns adjacent to each other in the width direction of the magnetic tape; a selection unit that selects a servo reproducing element from the servo reproducing elements according to a position of the data track, as a target of recording or reproducing of data in the data band, along the width direction; and a controller that controls positioning of the magnetic head along the width direction by using a result of reading of the servo patterns by the servo reproducing element selected by the selection unit.

An apparatus, in accordance with one aspect of the present invention, includes an inner array of data transducers on a module, the data transducers of the inner array being aligned along a common axis that extends between distal ends of the module. Two outer arrays of data transducers are positioned to sandwich the inner array therebetween. Inner servo readers are positioned between the inner array and the outer arrays. Outer servo readers are positioned toward outer ends of the outer arrays. Widths of at least some of the outermost data transducers in the inner array are less than widths of at least some of the innermost data transducers in the inner array.

An apparatus, in accordance with one aspect of the present invention, includes an inner array of data transducers on a module, the data transducers of the inner array being aligned along a common axis that extends between distal ends of the module. Two outer arrays of data transducers are positioned to sandwich the inner array therebetween. Inner servo readers are positioned between the inner array and the outer arrays. Outer servo readers are positioned toward outer ends of the outer arrays. Widths of at least some of the outermost data transducers in the inner array are less than widths of at least some of the innermost data transducers in the inner array.

Embodiments of the present disclosure generally relate to tape drives used for magnetic recording on tapes. Tape drives use tape heads that comprise a read head, a write head, and an additional head that may be a write head or a read head. The tape head is fabricated over a common substrate with the first head being formed first, followed by a shield layer, followed by the second head, followed by another shield layer, and finally followed by the third head. Fabricating the tape head over a common substrate is cost effective. The tape head can be wired such that fewer parallel connections between the heads and bond pads are present. As such, cross-talk between the wires and noise is reduced.

Embodiments of the present disclosure generally relate to tape drives used for magnetic recording on tapes. Tape drives use tape heads that comprise a read head, a write head, and an additional head that may be a write head or a read head. The tape head is fabricated over a common substrate with the first head being formed first, followed by a shield layer, followed by the second head, followed by another shield layer, and finally followed by the third head. Fabricating the tape head over a common substrate is cost effective. The tape head can be wired such that fewer parallel connections between the heads and bond pads are present. As such, cross-talk between the wires and noise is reduced.

Disclosed herein are magnetic write heads and methods of designing them, and data storage devices comprising such write heads. A magnetic write head having leading and trailing sides comprises an air-bearing surface (ABS), a main pole between the leading and trailing sides, a first return pole between the main pole and the leading side, at least one optical near-field generator between the first return pole and the main pole, and a second return pole between the main pole and the trailing side. The main pole comprises a first tapered portion comprising a leading-side edge perpendicular to the ABS, a first trailing-side edge at a first angle to the ABS, and a second trailing-side edge recessed from the ABS and at a second angle to the ABS. The second return pole comprises a second tapered portion adjacent to the ABS and extending toward the main pole.

Disclosed herein are magnetic write heads and methods of designing them, and data storage devices comprising such write heads. A magnetic write head having leading and trailing sides comprises an air-bearing surface (ABS), a main pole between the leading and trailing sides, a first return pole between the main pole and the leading side, at least one optical near-field generator between the first return pole and the main pole, and a second return pole between the main pole and the trailing side. The main pole comprises a first tapered portion comprising a leading-side edge perpendicular to the ABS, a first trailing-side edge at a first angle to the ABS, and a second trailing-side edge recessed from the ABS and at a second angle to the ABS. The second return pole comprises a second tapered portion adjacent to the ABS and extending toward the main pole.

A server box embodiment is disclosed that generally comprises an array of dummy HDDs that share a common set of universal disk drive components in a master components module, or power module. Each dummy HDDs is constructed without expensive onboard chipsets that control the normal functionality of a standard HDD. By sharing expensive chipsets in a master components module (power module) money can be saved in building and selling the dummy HDD server. Embodiments envision a power module possessing the needed chipset functionality that is missing in a dummy HDD. The power module can be made to move from dummy HDD to dummy HDD supplying the necessary chipset in a shared manner when data is being stored or retrieved for client or end-user.

The present disclosure generally relates to a magnetic media drive employing a magnetic recording head. The magnetic recording head comprises a first write head, a second write head, at least one read head, and a thermal fly height control element. The first write head is a wide writing write head comprising a first main pole and a first trailing shield. The second write head a narrow writing write head comprising a second main pole, a trailing gap, a second trailing shield, and one or more side shields. The first main pole has a shorter height and a greater width than the second main pole. The second main pole has a curved or U-shaped surface disposed adjacent to the trailing gap. The thermal fly height control element and the at least one read head are aligned with a center axis of the second main pole of the second write head.