Abstract: A decoupled partitioning divider for a data storage system enclosure includes a first leg having proximal and distal halves and a second leg having proximal and distal halves, and in which the first and second legs are coupled together at either the proximal or distal half and uncoupled from each other at the other of the proximal and distal halves, so that the divider legs are decoupled from each other at one half or one end. When installed in a data storage system enclosure between adjacent data storage devices, such as hard disk drives, vibration transfer among the devices housed therein may be inhibited.

Abstract: Embodiments disclosed herein generally relate to a method for monitoring optical power in a HAMR device. In one embodiment, the method includes enhancing a thermal sensor bandwidth through advanced electrical detection techniques. The advanced electrical detection techniques include obtaining calibration waveform data for a thermal sensor by calibrating the thermal sensor, obtaining real-time waveform data for the thermal sensor that may deviate from the calibration waveform data, updating the calibration waveform data to include the real-time waveform data, repeating obtaining real-time waveform data and updating the calibration waveform data during writing operations. By updating the calibration waveform data, the bandwidth of the thermal sensor is determined by a fixed sampling time interval, and the thermal sensor rise time to steady state would not be a limitation to its response time.

Abstract: A backplane configured to receive electrical components is provided. The backplane in one example includes a substrate comprising an at least partially flexible material, a plurality of backplane traces formed as part of the substrate, at least one connector island formed in the substrate, with the at least one connector island located in an opening in the substrate and configured to receive at least one mating electrical component, and one or more spring elements bridging between the at least one connector island and the substrate, with traces of the plurality of backplane traces extending over the one or more spring elements to the at least one connector island and with the one or more spring elements allowing the at least one connector island to flex with respect to the substrate and absorb vibrations.

Abstract: A backplane configured to receive electrical components is provided. The backplane in one example includes a substantially planar substrate comprising an at least partially flexible material and formed in a non-rectangular shape, a series of alternating connector islands formed along two substantially parallel axes, wherein each connector island is able to move independently of other connector islands, a plurality of backplane traces extending from the series of alternating connector islands to a backplane connector region of the substrate, with a number of backplane traces increasing closer to the backplane connector region, and one or more spring elements bridging between a particular connector island and the substrate, with the one or more spring elements allowing the particular connector island to flex with respect to the substrate and absorb vibrations.

Abstract: Embodiments described herein generally relate to controlling the flying height of a slider. The methods can include transmitting radiation from a radiation source, determining a change in temperature, the change in temperature being the difference between a first temperature and an ambient temperature and changing the flying height of the slider and head based on the change in temperature. The devices generally include a head with a supporting surface and a media facing surface, a radiation source submount, a radiation source, and a temperature sensor positioned proximate the radiation source submount or the radiation source.

Abstract: A backplane configured to receive electrical components is provided. The backplane in one example includes a substantially planar substrate comprising an at least partially flexible material and formed in a non-rectangular shape, a series of alternating connector islands formed along two substantially parallel axes, wherein each connector island is able to move independently of other connector islands, a plurality of backplane traces extending from the series of alternating connector islands to a backplane connector region of the substrate, with a number of backplane traces increasing closer to the backplane connector region, and one or more spring elements bridging between a particular connector island and the substrate, with the one or more spring elements allowing the particular connector island to flex with respect to the substrate and absorb vibrations.

Abstract: A backplane configured to receive electrical components is provided. The backplane in one example includes a substrate comprising an at least partially flexible material, a plurality of backplane traces formed as part of the substrate, at least one connector island formed in the substrate, with the at least one connector island located in an opening in the substrate and configured to receive at least one mating electrical component, and one or more spring elements bridging between the at least one connector island and the substrate, with traces of the plurality of backplane traces extending over the one or more spring elements to the at least one connector island and with the one or more spring elements allowing the at least one connector island to flex with respect to the substrate and absorb vibrations.

Abstract: In one embodiment, a system includes a magnetic head having a write portion having a main pole, a near field transducer comprising a conductive metal film having outer regions extending from an active region, and an optical waveguide for illumination of the near field transducer, wherein the conductive metal film extends in a cross track direction for a width at least 200% greater than a width of the active region of the conductive metal film, wherein a portion of the main pole extends along the conductive metal film in a cross track direction for a width at least 200% greater than the width of the active region of the conductive metal film.

Abstract: Embodiments described herein generally relate to controlling the flying height of a slider. The methods can include transmitting radiation from a radiation source, determining a change in temperature, the change in temperature being the difference between a first temperature and an ambient temperature and changing the flying height of the slider and head based on the change in temperature. The devices generally include a head with a supporting surface and a media facing surface, a radiation source submount, a radiation source, and a temperature sensor positioned proximate the radiation source submount or the radiation source.

Abstract: In one general embodiment, an apparatus includes a write pole, a near field transducer, a waveguide for delivering light to the near field transducer, and a first heating device positioned between the write pole and at least one of the waveguide and the near field transducer.

Abstract: A disk drive can include an enclosure and a media disk rotatably mounted to the enclosure via a spindle. A fluid dynamic bearing (FDB) can be mounted between the enclosure and the spindle of the media disk. The FDB may include an integrally formed shaft and lower thrust bush formed together from a single material.

Abstract: Embodiments of the present invention generally relate to a HAMR device having two temperature sensors. The first temperature sensor is disposed adjacent a waveguide and is about two or more micrometers away from an air bearing surface. The first temperature sensor has a length, a width and a thickness, and the length is greater than the width and the thickness. The length of the first temperature sensor is substantially perpendicular to the waveguide.

Abstract: A disk drive can include an enclosure and a media disk rotatably mounted to the enclosure via a spindle. A fluid dynamic bearing (FDB) can be mounted between the enclosure and the spindle of the media disk. The FDB may include an integrally formed shaft and lower thrust bush formed together from a single material.

Abstract: Embodiments of the present invention generally relate to a HAMR device having two temperature sensors. The first temperature sensor is disposed adjacent a waveguide and is about two or more micrometers away from an air bearing surface. The first temperature sensor has a length, a width and a thickness, and the length is greater than the width and the thickness. The length of the first temperature sensor is substantially perpendicular to the waveguide.

Abstract: A method of radially positioning a heat assisted magnetic recording (HAMR) head writes data to a first band, wherein a radial position of the HAMR head within each data track is defined by a positional bias and a track location. A determination is made regarding whether a threshold has been reached with respect to the first band. If the write threshold has been reached with respect to the first band, then the positional bias associated with the first band is modified to evenly distribute thermal exposure of data tracks in the first band.

Abstract: In one embodiment, a system includes a magnetic head having a write portion having a main pole, a near field transducer comprising a conductive metal film having outer regions extending from an active region, and an optical waveguide for illumination of the near field transducer, wherein the conductive metal film extends in a cross track direction for a width at least 200% greater than a width of the active region of the conductive metal film, wherein a portion of the main pole extends along the conductive metal film in a cross track direction for a width at least 200% greater than the width of the active region of the conductive metal film.

Abstract: Embodiments of the present invention generally relate to a HAMR device having two temperature sensors disposed between a near field transducer (NFT) and a return pole. The two temperature sensors are aligned in a cross-track direction.

Abstract: A thermally-assisted magnetic recording (HAMR) disk drive uses a thermal sensor to accurately monitor laser power during writing. The disk drive controller, or a separate processor, computes a prediction of the laser power from a history of laser power settings. This predicted value is compared with the measured value from the thermal sensor. If the difference is too large or too small, indicating that the laser power is too high or too low, an error signal is sent to the disk drive controller. The disk drive controller may adjust the laser power setting and initiate a re-write of the data. The predicted laser power is calculated from a convolution of a sequence of current and prior laser power settings with a sequence of coefficients. A calibration process generates the sequence of coefficients when the disk drive is idle or just after it is powered on.

Abstract: A disk clamp for clamping an information storage disk to a rotating spindle in a disk drive includes a deflection portion that is annular and conical in shape, and which has a material thickness, an outer extent, and an inner extent. In certain embodiments, the inner extent is offset from the outer extent by a particular height measured parallel to an axis of rotation of the disk clamp. The disk clamp may further include a disk contact portion that is disposed radially outboard from the deflection portion, and which may include a curvature radially outboard of the outer extent that departs from a projection of the deflection portion, and a surface for contacting the information storage disk.

Abstract: Approaches for a hard-disk drive (HDD) comprising a head slider comprising a thermoelectric embedded contact sensor. The thermoelectric embedded contact sensor may comprise a first and second conductive lead and a metallic component. The metallic component has a different Seebeck coefficient than the first and second conductive leads. A thermoelectric voltage across the metallic component is used to measure the distance between a head slider and a magnetic-recording disk without supplying an electrical current from a hard-disk drive to either of the first conductive lead or the second conductive lead.