Abstract: The present disclosure generally relates to a tape embedded drive having a plurality of feedthrough connectors. The feedthrough connectors are symmetrically placed within the tape embedded drive such that regardless of whether an even or odd number of feedthrough connectors are present, the feedthrough connectors are symmetrical about a centerline of the tape embedded drive. In such a layout, the tape embedded drive is more stable due to symmetrical mass balance. Additionally, the tape embedded drive is more cost effective to produce.

Abstract: A data storage system may utilize a gimbal test system to find open circuits and short circuits in a head gimbal assembly. The gimbal test system can have a gimbal flexure suspended between a load beam and a data storage medium with a flex circuit physically attached to the gimbal flexure to electrically connect a transducing head to a controller. The flex circuit can be tested with a test via that continuously extends through the flex circuit to a probe portion and a test pad located on an air bearing side of the gimbal flexure. The probe portion can be backed by the gimbal flexure along a plane perpendicular to a recording surface of the data storage medium.

Abstract: A write shield of a magnetic head includes a pair of first side shields and a pair of second side shields. The pair of first side shields each include a first side wall and a second side wall. The pair of second side shields each include a third side wall. The third side wall of one of the pair of second side shields is continuous with the first side wall of one of the pair of first side shields. The third side wall of the other of the pair of second side shields is continuous with the first side wall of the other of the pair of first side shields.

Abstract: An exemplary data storage device includes an actuator arm assembly, a top guide rail, a bottom guide rail, and a first ball bearing. The actuator arm assembly includes a first post defining a pivot axis that is inclined between about 5 degrees and about 25 degrees from a horizontal plane defined by a data storage disk surface. The top guide rail includes a first rolling surface that is parallel to the pivot axis. The bottom guide rail is spaced from the top guide rail and includes a second rolling surface that is parallel to the first rolling surface. The first ball bearing includes a first inner race and a first outer race, the first inner race surrounding the first post, and the first outer race in contact with the first rolling surface or the second rolling surface. An exemplary method of assembling a data storage device is also described.

Abstract: An apparatus is provided for the simultaneous transferring of multiple storage devices from a chassis to reduce service time and associated server temperature fluctuations. The storage transfer device may be mounted to a chassis with a multitude of electronic devices, e.g., a JBOD with HDDs, above the devices to be removed. The storage device may then be manipulated to mechanically unlatch the devices from the chassis and simultaneously attach the devices to the transfer device. The devices may then be disconnected and withdrawn from the chassis and pulled into the storage transfer device. The devices may be re-installed later using the storage device and the reverse process.

Abstract: A heat-assisted magnetic recording device is disposed in a hermetically sealed enclosure. The device includes a slider comprising a reader, a writer, and an optical waveguide configured to couple light from a light source to a near-field transducer situated at or near an air bearing surface of the slider. The near-field transducer comprises an enlarged portion and a peg extending from the enlarged portion in a direction of the air bearing surface. A fill gas is provided within the enclosure. The fill gas comprises a mixture of a low-density, inert gas and at least one gas that oxidizes carbon, where the total carbon oxidizing gas concentration of the fill gas is 3-50% by volume. In certain embodiments, the fill gas comprises a hydrogen concentration sufficient to retard oxidation of the peg when the peg is at an operating temperature associated with write operations.

Abstract: A storage device configured to store data on a tape is provided. In one aspect, the storage device includes the tape, which is configured to store data, and a data head, which is configured to read and/or write data from and/or to the tape. The storage device further includes an actuator configured to move the tape in a length direction in a step-wise manner. The actuator can include a plurality of pulling electrodes, wherein each pulling electrode can be activated to exert a pulling force on the tape, and a plurality of clamping electrodes, wherein each clamping electrode can be activated to clamp the tape.

Abstract: According to one embodiment, a magnetic head includes a shield, a magnetic pole, a first magnetic layer provided between the shield and the magnetic pole, a second magnetic layer provided between the first magnetic layer and the magnetic pole, a third magnetic layer provided between the second magnetic layer and the magnetic pole, a first nonmagnetic layer provided between the shield and the first magnetic layer, a second nonmagnetic layer provided between the first magnetic layer and the second magnetic layer, a third nonmagnetic layer provided between the second magnetic layer and the third magnetic layer, and a fourth nonmagnetic layer provided between the third magnetic layer and the magnetic pole. The first and third nonmagnetic layers include one of Cu, Ag, Au, Al, and Ti. The second and fourth nonmagnetic layers include one of Ta, Pt, Ir, W, Mo, Cr, Tb, Rh, Pd, and Ru.

Abstract: According to one embodiment, a magnetic disk device includes a first disk having a first user data region and a first system area, a second disk having a second user data region and a second system area, a first head that writes data to the first disk, a second head that writes data to the second disk, a first actuator having the first head, a second actuator having the second head, a first controller that controls the first disk, the first head, and the first actuator, and a second controller that controls the second disk, the second head, and the second actuator, wherein the first controller records first information related to the first head and the first disk in the second system area.

Abstract: An issue facing shared read/write player hard disc drives (HDDs) is when a head-media contact event occurs, any resulting plume of debris caused by the contact event not only affects the magnetic disc currently being read or written, but other magnetic discs within the HDD enclosure. The presently disclosed technology is directed as mitigating the potential consequences of such a head-media contact event. By providing one or more internal access doors within the HDD, a magnetic disc currently being read from or written to may be physically isolated from other magnetic discs within the HDD. As a result, in the event of a head-media contact event, any resulting plume of debris caused by the contact event only affects the magnetic disc currently being read or written. The remaining magnetic discs within the HDD are isolated from the plume of debris.

Abstract: According to one embodiment, a magnetic recording device includes a magnetic head, and an electrical circuit. The magnetic head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first and the second magnetic poles. The stacked body includes a first nonmagnetic layer, a first magnetic layer provided between the first nonmagnetic layer and the second magnetic pole, a first layer provided between the first magnetic layer and the second magnetic pole, a second nonmagnetic layer provided between the first layer and the second magnetic pole, a second magnetic layer provided between the second nonmagnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the second magnetic layer and the second magnetic pole. The electrical circuit supplies, to the stacked body, a first current having a first orientation from the second magnetic pole toward the first magnetic pole.

Abstract: The present disclosure relates to read head apparatus, and methods of forming read head apparatus, for magnetic storage devices, such as magnetic tape drives (e.g., tape drives). In one implementation, a read head for magnetic storage devices includes a lower shield, one or more upper shields, one or more lower leads, and a plurality of upper leads. The read head includes a plurality of read sensors, each read sensor of the plurality of read sensors including a first antiferromagnetic (AFM) layer. The read head includes a plurality of soft bias side shields disposed between and outwardly of the plurality of read sensors. The read head includes one or more second AFM layers disposed above the first AFM layer and the plurality of soft bias side shields along a downtrack direction.

Abstract: A data storage device configured to access a magnetic tape wound around a first reel and a second reel is disclosed, wherein the data storage device comprises at least one head configured to access the magnetic tape. A distortion of the magnetic tape is measured, and the magnetic tape is rewound so that the first and second reels have a respective first and second radius of the wound magnetic tape based on the measured distortion.

Abstract: According to one embodiment, a magnetic head includes a first magnetic pole, a second magnetic pole, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic pole and the first magnetic layer, a third magnetic layer provided between the first magnetic pole and the second magnetic layer, a first nonmagnetic layer provided between the first magnetic layer and the second magnetic pole, a second nonmagnetic layer provided between the second and first magnetic layers, and a third nonmagnetic layer provided between the third and second magnetic layers. The third magnetic layer includes first and second elements. The first and second magnetic layers do not include the second element. Or concentrations of the second element in the first and second magnetic layers are less than in the third magnetic layer.

Abstract: A flexure assembly is described. The flexure assembly includes a gimbal portion on configured to receive a slider. The gimbal portion includes a first surface and a second surface which is opposite to the first surface. The slider is mounted on the second surface. The flexure assembly also includes a pair of microactuator elements. The flexure assembly also includes a tongue of the gimbal portion on which the slider is mounted. The tongue includes a dimple point which represents the center of the tongue. The flexure assembly also includes a pair of first supporting portions and a pair of second supporting portions of the gimbal portion. A pair of end portions are individually secured to the tongue and the first supporting portions and the pair of second supporting portions. The flexure assembly also includes a conductive circuit portion unsupported between a first stationary part and the pair of end portions.

Abstract: The present disclosure generally related to a two dimensional magnetic recording (TDMR) read head having a magnetic tunnel junction (MTJ). Both the upper reader and the lower reader have a dual free layer (DFL) MTJ structure between two shields. A synthetic antiferromagnetic (SAF) soft bias structure bounds the MTJ, and a rear hard bias (RHB) structure is disposed behind the MTJ. The DFL MTJ decreases the distance between the upper and lower reader and hence, improves the area density capacity (ADC). Additionally, the SAF soft bias structures and the rear head bias structure cause the dual free layer MTJ to have a scissor state magnetic moment at the media facing surface (MFS).

Abstract: The present disclosure relates to pretreating a magnetic recording head for magnetic media drive. For a heat assisted magnetic recording (HAMR) head, a light source provides the necessary heat for the drive to operation. A vertical cavity surface emitting laser (VCSEL) is mounted to a top surface of a slider. A plurality of laser beams are emitted from the bottom surface of the VCSEL and directed to a corresponding number of waveguide structures within the HAMR head. The waveguide structures feed into a multimode interference (MMI) device that then directs the laser into a single waveguide for focusing on a near field transducer (NFT). The VCSEL lasers are phase coherent and have no mode hopping.

Abstract: According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a third magnetic layer provided between the second magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second and third magnetic layers, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. A first magnetic pole length of the first magnetic pole is less than a second magnetic pole length of the second magnetic pole. A first magnetic layer length of the first magnetic layer is greater than a second magnetic layer length of the second magnetic layer.

Abstract: A storage device comprises tape reel(s) holding tape media for storing data, a head assembly, motor(s) configured to actuate the head assembly, a sealed casing, and a printed circuit board assembly (PCBA) configured to control operations of the motor(s). The head assembly comprises a support structure, a head bar with read head(s) and write head(s), and a suspension system connecting the head bar to the support structure. The sealed casing encloses in its interior the tape reel(s), the head assembly, and the motor(s). Meanwhile, the PCBA is mounted on an external surface of the casing.

Abstract: According to one embodiment, a magnetic recording device includes a magnetic head, and an electrical circuit. The magnetic head includes a magnetic pole, a first shield, and a stacked body provided between the magnetic pole and the first shield. The stacked body includes a first magnetic layer, a second magnetic layer, a first layer provided between the first and second magnetic layers, and a first nonmagnetic layer provided between the first magnetic layer and the first layer. A change rate of an electrical resistance of the stacked body with respect to a change of a current density flowing in the stacked body has a first value when the current density is in a first range, a second value when the current density is in a second range, and a third value when the current density is in a third range.