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Seagate Technology Llc patents (2017 archive)


Recent patent applications related to Seagate Technology Llc. Seagate Technology Llc is listed as an Agent/Assignee. Note: Seagate Technology Llc may have other listings under different names/spellings. We're not affiliated with Seagate Technology Llc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "S" | Seagate Technology Llc-related inventors


Interconnect interposer attachable to a trailing edge of a slider

A slider of a magnetic recording head comprises a media-facing surface, an upper surface opposing the media-facing surface, a leading edge, and a trailing edge. A plurality of electrical bond pads is disposed in a spaced-apart relationship on the trailing edge of the slider. ... Seagate Technology Llc

Transient compression layer

A storage device or storage system includes a transient compression layer that is established based on a level of finishedness of the capacity of the storage device or storage system. Data may be compressed and written to the transient compression layer until the capacity is sufficiently finished, after which the compressed data may be destaged and written to the capacity. ... Seagate Technology Llc

Compression sampling in tiered storage

A method for data steering in tiered storage is described. In one embodiment, the method includes ranking a plurality of storage areas of a storage device according to at least one property of the plurality of storage areas. ... Seagate Technology Llc

Internal data transfer management in a hybrid data storage device

Apparatus and method for managing data in a hybrid data storage device. In some embodiments, the hybrid data storage device has a hard disc drive (hdd) controller circuit coupled to non-volatile rotatable storage media and a solid state drive (ssd) controller circuit coupled to non-volatile solid state memory. ... Seagate Technology Llc

Laser power monitoring in a heat-assisted magnetic recording device using a resistive sensor and high-frequency laser modulation

An apparatus comprises a light source configured to generate light, and a modulator coupled to the light source and configured to modulate the light above a predetermined frequency. A slider is configured for heat-assisted magnetic recording and to receive the modulated light. ... Seagate Technology Llc

Structural electrical grounding for data management systems and related methods

. . A data management system includes a chassis metalwork that is electrically conductive. The chassis metalwork is electrically coupled to the power supply to form a return power path. ... Seagate Technology Llc

Coil filament for plasma enhanced chemical vapor deposition source

A vapor deposition source that includes a substantially vertical plate to which first and second filament posts are coupled. The vapor deposition source also includes a filament having a first end and a second end. ... Seagate Technology Llc

Modular magnetoresistive memory

Apparatus and method contemplating a magnetoresistive memory apparatus having a read element having a high resistance material selected to optimize read sensitivity and a write element having a material selected for a lower critical current response than the read element critical current response to optimize switching efficiency, wherein the read element resistance is higher than the write element resistance, and a shared storage space for both elements.. . ... Seagate Technology Llc

Transducer bar translation system

A plurality of transducer bars may be concurrently translated from a first orientation to a second orientation by a translation system that has first and second plates. The first plate can have a plurality of first notches with each first notch shaped to hold a transducer bar in a horizontal orientation. ... Seagate Technology Llc

Methods of forming materials for at least a portion of a nft and nfts formed using the same

A method including depositing a plasmonic material at a temperature of at least 150° c.; and forming at least a peg of a near field transducer (nft) from the deposited plasmonic material.. . ... Seagate Technology Llc

Read cache management

Implementations disclosed herein provide for a storage system including an on-disk read cache and a variety of read cache management techniques. According to one implementation, a storage device controller time-sequentially reads a series of non-contiguous data blocks storing a data sequence in a read cache of a magnetic disk, the data sequence identified by a requested sequence of logical block addresses (lbas). ... Seagate Technology Llc

System, method, and computer program product for interfacing one or more storage devices with a plurality of bridge chips

Methods, apparatus, and systems, for interfacing one or more storage devices with a plurality of bridge chips. An apparatus may include a memory, a communication bus coupled to a device, and a processor communicatively coupled to the communication bus and the memory. ... Seagate Technology Llc

Tracking hot areas of disk drive

Methods, apparatuses, systems, and devices are described for determining use of areas of a disk drive. In one method, a score of an area node of the disk drive may be increased each time the area node is accessed during a time interval of a series of time intervals. ... Seagate Technology Llc

Command tunneling in a hybrid data storage device

Apparatus and method for managing data in a hybrid data storage device. In some embodiments, a hybrid device has a hard disc drive (hdd) controller circuit coupled to non-volatile rotatable media and a solid state drive (ssd) controller circuit coupled to non-volatile solid state memory. ... Seagate Technology Llc

12/21/17 / #20170364128

Data storage enclosure with a stop slot

A data storage enclosure can have one or more data storage devices positioned in an enclosure slot having one or more stops. A data storage device can be attached to a rail having a rail width and having first and second protrusions offset from one another. ... Seagate Technology Llc

12/14/17 / #20170358326

Disc drive actuator assembly with bearing cooling

Various aspects of the present disclosure are directed toward a disc drive actuator assembly including an e-block, a plurality of bearings, and one or more heat transfer components. The heat transfer component(s) operates to conductively draw heat from the plurality of bearings through the e-block, and convectively dissipate the heat into an atmosphere in contact therewith. ... Seagate Technology Llc

12/14/17 / #20170354997

Workpiece cleaning

Certain exemplary aspects of the present disclosure are directed towards apparatuses and methods which autonomously decontaminate parts. Parts to be cleaned are identified, and based on the identification of the part, a part specific cleaning program is initiated. ... Seagate Technology Llc

12/07/17 / #20170352377

Forward corrupted track detection and by-pass for shingled magnetic recording drives

Systems and methods for forward corrupted track detection and by-pass are described. In one embodiment, a storage system comprising a storage controller performs a read operation for a target track of a shingled magnetic recording (smr) disk drive and detects a read operation failure of the read operation for the target track. ... Seagate Technology Llc

12/07/17 / #20170352376

Fragmented data storage bands

An implementation of a system disclosed herein provides a method for managing data streams of sequential nature, wherein the method writes the sequential chunks (fragments) directly to an open band in the order these are received from the host and includes determining an end of the incoming data write request related to streaming data and in response to the determination of the end of the incoming data write request related to streaming data, copying remaining data from a current physical band mapped to logical block addresses lbas related to the data write requests to the allocated (open) band.. . ... Seagate Technology Llc

12/07/17 / #20170352371

Direct current magnetoresistive jog offset compensation

Systems and methods for compensating for magnetoresistive (mr) jog offset direct current (dc) drift in a disc drive are described. In one embodiment, a method may include determining an occurrence of nos, for example, by monitoring disc slip, to determine when the method should proceed. ... Seagate Technology Llc

12/07/17 / #20170352370

Hysteresis compensation in a disc drive

Systems and methods for compensating for hysteresis in a disc drive are described. In one embodiment, a method may use an inverse hysteresis model to linearize effects of hysteresis of a microactuator in the disc drive. ... Seagate Technology Llc

12/07/17 / #20170351632

Interconnect for shared control electronics

A mass data storage system includes a number of communicatively coupled storage drives powered and controlled by shared control electronics. The shared control electronics are configured to transmit analog read/write signals through an interconnect to each of the multiple individually selectable storage drives. ... Seagate Technology Llc

12/07/17 / #20170351582

Technologies for limiting performance variation in a storage device

Systems and methods for limiting performance variation in a storage device are described. Storage devices receive work requests to perform one or more operations from other computing devices, such as a host computing device. ... Seagate Technology Llc

11/30/17 / #20170345448

Near field transducer (nft) including peg and disc of different materials

Devices having air bearing surfaces (abs), the devices include a near field transducer (nft) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the disc material has a first real part of the permittivity and a peg material has a second real part of the permittivity and the second real part of the permittivity is not greater than the first real part of the permittivity.. . ... Seagate Technology Llc

11/30/17 / #20170345447

Method of detecting slider trailing edge for forming electrical connections

A method of forming an electrical interconnection between a first slider pad of a slider and an adjacent first suspension pad of a suspension, wherein the slider is attached to the suspension, including the steps of positioning the suspension and attached slider at a soldering angle, wherein the slider comprises a trailing edge, measuring at least an x-coordinate and a z-coordinate of a trailing edge of the slider to determine a position of the trailing edge of the slider, analyzing the position of the trailing edge of the slider to determine a bonding location of the slider, positioning a capillary tube above the suspension pad and slider at a distance calculated from the bonding location of the slider, and dispensing solder from the capillary tube for contact with the first slider pad and the first suspension pad.. . ... Seagate Technology Llc

11/30/17 / #20170344279

Save critical data upon power loss

Systems and methods for saving critical data upon power loss are described. In one embodiment, the systems and methods include performing a write operation to a first track of a storage drive, monitoring a voltage level of a storage drive to detect power loss on the storage drive while performing the write operation, identifying a track id of a second track adjacent to the first track upon detecting power loss on the storage drive, and storing the identified track id in a non-volatile memory on the storage drive.. ... Seagate Technology Llc

11/23/17 / #20170338829

Solid state microwave generator

An apparatus includes a spin torque oscillator, a sensor, and a processing unit. The spin torque oscillator is configured to receive a current and to generate a microwave output signal. ... Seagate Technology Llc

11/23/17 / #20170338828

Solid state microwave generator

A spin torque oscillation generator includes a spin reference layer and a spin oscillation layer. The spin reference layer has a first magnetization direction. ... Seagate Technology Llc

11/23/17 / #20170337943

Methods of forming near field transducers and near field transducers formed thereby

A method of forming a near field transducer (nft), the method including the steps of depositing a primary material; and implanting a secondary element, wherein both the primary material and the secondary element are chosen such that the primary material is densified via implantation of the secondary element.. . ... Seagate Technology Llc

11/23/17 / #20170335463

Stream flow sparger for electroless nickel plating

Systems and methods for nickel plating include providing a tank that retains a plating bath into which a substrate is submerged, and creating a horizontal flow of processing solution in the plating bath to assist in carrying contaminants out of the plating bath. A sparger box may be positioned in the tank to deliver the processing solution into the plating bath in a horizontal direction. ... Seagate Technology Llc

11/16/17 / #20170330601

Methods and devices for sealing hard drives

A hard drive includes a base deck with sidewalls to define a cavity. The hard drive further includes a weld lip that is positioned along and extends from the sidewalls. ... Seagate Technology Llc

11/16/17 / #20170330591

Heat-assisted shingled magnetic recording with variable track widths

A storage device includes a storage controller configured to operate a heat-assisted magnetic recording head to write data to a band of consecutive data tracks in a consecutive track order while selectively alternating a power level of the heat source when writing to some data tracks of the band.. . ... Seagate Technology Llc

11/16/17 / #20170330587

Variable written track widths for attribute-based storage

A storage device controller is configured to select one of multiple written track widths for a storage location based on a write attribute of data to be recorded at the storage location. According to one implementation, the storage device controller is further configured to select a power level for a heat-assisted magnetic recording (hamr) device based on the write attribute.. ... Seagate Technology Llc

11/16/17 / #20170329707

Cache offload across power fail

The disclosed technology provides for selection of a subset of available non-volatile memory devices in an array to receive a dirty cache data of a volatile cache responsive to detection of a power failure. In one implementation, the selection of the non-volatile memory devices is based on one or more predictive power parameters usable to estimate a time remaining during which a reserve power supply can support a cache offload to the selected subset of devices.. ... Seagate Technology Llc

11/16/17 / #20170329706

Volatile cache reconstruction after power failure

The disclosed technology provides for off-loading dirty data from a volatile cache memory to multiple non-volatile memory devices responsive to detection of a power failure. The arrangement of the dirty data is describable by a cache image, which is reconstructed within the volatile memory from the non-volatile memory devices responsive to detection of power restoration following the power failure.. ... Seagate Technology Llc

11/16/17 / #20170329686

Rapid system debugging using finite state machines

Systems and methods for improving system debugging using finite state machines are described. In one embodiment, the systems and methods includes selecting, by a first multiplexor, a period of a timer tick for one or more blocks of a system on a chip (soc), comparing, by a first comparator, a current state of the one or more blocks to a previous state of the one or more blocks, and receiving, by a finite state machine (fsm), the result from the first comparator as a first input, receiving a pulse based on the selected period of the timer tick from the first multiplexor as a second input, and based on the first and second inputs generating an output indicating whether the current and previous states remain unchanged after a time of at least two timer ticks. ... Seagate Technology Llc

11/16/17 / #20170329550

Method and apparatus for rapid volume reformatting

A storage controller is provided. The storage controller includes circuitry configured to utilize a format command to change a storage volume coupled to the storage controller from a first format to a second format and memory configured to store a data structure for first and second format indications for the storage volume. ... Seagate Technology Llc

11/16/17 / #20170329532

Data refresh in flash memory

Systems and methods for improving data refresh in flash memory are described. In one embodiment, the method includes identifying a first garbage collection unit (gcu) of the storage system, computing a parity function in relation to the first gcu, identifying a data impairment in a first block, the first block being from the n blocks in the first gcu, removing the first block from the first gcu after identifying the data impairment in the first block, and recomputing the parity function when the first block is not cloned.. ... Seagate Technology Llc

11/16/17 / #20170329525

Enhanced read recovery based on write time information

Systems and methods for enhanced read recovery based on write time information are described. In one embodiment, the systems and methods include opening a block of flash memory cells for programming, tracking a block open time, and performing a read operation of a programmed page from the block based at least in part on the block open time. ... Seagate Technology Llc

11/09/17 / #20170323121

Storage device tampering detection

Apparatus (400, 500) and method (200, 220, 240, 260, 280, 300) for detecting unauthorized tampering with a data storage device (100, 110, 140, 520). In some embodiments, the data storage device has a housing (112, 142) and a memory (192) supported by the housing. ... Seagate Technology Llc

11/09/17 / #20170322844

Super-parity block layout for multi-reader drives

System, methods, and apparatuses for storing data in a disk-based storage device incorporating multiple readers per recording surface to reduce recovery time from read errors using super-parity. An exemplary storage device comprises a read/write head and an associated recording surface. ... Seagate Technology Llc

11/09/17 / #20170322751

I/o device and computing host interoperation

Methods, systems and computer-readable storage media for receiving, via an external interface of a storage device, a command from a computing host, the command including at least one non-standard command modifier, executing the command according to a particular non-standard command modifier, storing an indication of the particular non-standard command modifier in an entry of a map associated with a logical block address of the command, and storing a shadow copy of the map in a memory of the computing host.. . ... Seagate Technology Llc

11/09/17 / #20170322750

Systems and methods for latency based data recycling in a solid state memory system

Systems and method relating generally to solid state memory, and more particularly to systems and methods for recycling data in a solid state memory. The systems and methods include receiving a data set maintained in a memory device, applying at least one iteration of a data decoding algorithm to the data set by a data decoder circuit to yield a decoded output, counting the number of iterations of the data decoding algorithm applied to the data set to yield an iteration count, and recycling the data set to the memory device. ... Seagate Technology Llc

10/26/17 / #20170311486

Modular fan assembly

A modular fan assembly for use in a multi-device storage enclosure. In some embodiments, the fan assembly has a rigid open frame with opposing first and second ends. ... Seagate Technology Llc

10/26/17 / #20170309312

Methods and devices for detecting shock events

An apparatus includes an actuator assembly, a dampening assembly coupled to the actuator assembly, and a vibration sensor assembly coupled to the dampening assembly and coupled to the actuator assembly by way of the dampening assembly. A method includes attaching a dampening assembly to an actuator assembly and attaching a vibration sensor assembly to the dampening assembly. ... Seagate Technology Llc

10/26/17 / #20170308429

Proactive cloud orchestration

Methods, systems, and devices are described for providing proactive cloud orchestration services for a cloud hardware infrastructure. A health management system may monitor component(s) of the cloud hardware infrastructure. ... Seagate Technology Llc

10/26/17 / #20170308114

Methods and devices for sealing hard drives

A hard drive includes a base deck and process cover that define a cavity for housing data storage components. The hard drive further includes a final cover that is placed over the process cover and is coupled to the base deck. ... Seagate Technology Llc

10/26/17 / #20170307976

Methods and apparatuses for directed self-assembly

Provided herein is a method, including creating a first layer over a substrate, wherein the first layer is configured for directed self-assembly of a block copolymer thereover; creating a continuous second layer over the first layer by directed self-assembly of a block copolymer, wherein the second layer is also configured for directed self-assembly of a block copolymer thereover; and creating a third layer over the continuous second layer by directed self-assembly of a block copolymer. Also provided is an apparatus, comprising a continuous first layer comprising a thin film of a first, phase-separated block copolymer, wherein the first layer comprises a first chemoepitaxial template configured for directed self-assembly of a block copolymer thereon; and a second layer on the first layer, wherein the second layer comprises a thin film of a second, phase-separated block copolymer.. ... Seagate Technology Llc

10/26/17 / #20170304989

Lapping plate and method of making

The present disclosure involves a method of making a lapping plate by electrostatically coating a platen with solid resin powder and abrasive particles followed by curing the solid resin powder to form an abrasive coating. The present disclosure also involves related lapping plates.. ... Seagate Technology Llc

10/12/17 / #20170294201

Devices including at least one adhesion layer and methods of forming adhesion layers

Devices that include a near field transducer (nft), the nft having at least one external surface; and at least one adhesion layer positioned on at least a portion of the at least one external surface, the adhesion layer including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof. . ... Seagate Technology Llc

10/12/17 / #20170294199

Magnetoresistive sensor fabrication

Implementations described and claimed herein include a reader structure, comprising a first reader, including a sensor stack and a top shield structure, the top shield structure comprises a synthetic antiferromagnetic shield (saf) structure, including a reference layer including at least a layer of nife and an impurity additive, an rkky coupling layer rkky coupling layer (e.g., ru layer), and a pinned layer. In another implementation, the rl of the saf shield structure of a first reader includes at least a layer of amorphous magnetic material. ... Seagate Technology Llc

10/05/17 / #20170287567

Systems and methods for sub-zero threshold characterization in a memory cell

Systems and methods relating generally to data processing, and more particularly to systems and methods for characterizing a solid state memory. In one embodiment, the systems and methods may include programming a first cell of a solid state memory device to a negative voltage, programming a second cell of the solid state memory device to a positive voltage, wherein the second cell is adjacent to the first cell, calculating a voltage shift on the negative voltage programmed to the first cell, characterizing a shifted voltage level on the first cell as an interim voltage, and subtracting the voltage shift from the interim voltage to yield an actual voltage on the first cell.. ... Seagate Technology Llc

10/05/17 / #20170287514

Read/write head with integrated switch network

A read/write head has a set of components that at least include: at least one clearance actuator; at least one read transducer configured to read from a magnetic recording medium; and at least one write transducer configured to write to the magnetic recording medium. A switch network is coupled to the set of components and configured to, in response to a control signal, couple a selected sub-combination of the components to a common set of signal lines. ... Seagate Technology Llc

10/05/17 / #20170287512

Data reader with spin filter

A data reader may be configured with at least a detector stack positioned on an air bearing surface and consisting of a spin accumulation channel continuously extending from the air bearing surface to an injector stack. The injector stack can have at least one cladding layer contacting the spin accumulation channel. ... Seagate Technology Llc

10/05/17 / #20170286319

Securing information relating to data compression and encryption in a storage device

Apparatus and method for data security in a data storage environment. In some embodiments, input data from a host is received into a buffer memory. ... Seagate Technology Llc

10/05/17 / #20170286305

Prefetch command optimization for tiered storage systems

A system is provided. The system includes a storage controller configured to receive a prefetch command from a host interface. ... Seagate Technology Llc

09/28/17 / #20170278529

Magnetoresistive sensor with enhanced uniaxial anisotropy

A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. ... Seagate Technology Llc

09/28/17 / #20170277450

Lockless parity management in a distributed data storage system

Method and apparatus for managing data in a distributed data storage system. In some embodiments, a plurality of storage devices define an overall available memory space. ... Seagate Technology Llc

09/28/17 / #20170277448

End of life extension of solid state memory

Method and apparatus for managing a solid state memory, such as but not limited to a nand flash memory. In some embodiments, a storage device includes a non-volatile solid state memory and a control circuit configured to transfer user data between the memory and a host device. ... Seagate Technology Llc

09/28/17 / #20170277444

Dynamic bandwidth reporting for solid-state drives

An apparatus includes a memory and a controller. The memory may be configured to store data. ... Seagate Technology Llc

09/21/17 / #20170269855

Techniques for reducing memory write operations using coalescing memory buffers and difference information

The present disclosure relates to examples of reducing memory write operations using coalescing memory buffers. In one example implementation according to aspects of the present disclosure, a method comprises computing a difference between a current state of data of at least one block of a storage device to which data is to be written and a state that would result from a write operation. ... Seagate Technology Llc

09/14/17 / #20170263282

Bolometer for internal laser power monitoring in heat-assisted magnetic recording device

An apparatus comprises a slider having an air-bearing surface (abs), a write pole at or near the abs, and a reader at or near the abs and connected to a pair of reader bond pads of the slider. A near-field transducer (nft) is formed on the slider at or near the abs, and an optical waveguide is formed in the slider and configured to receive light from a laser source. ... Seagate Technology Llc

09/14/17 / #20170263276

Devices including a near field transducer and at least one associated adhesion layer

Devices that include a near field transducer (nft), the nft having a disc and a peg, and the peg having five surfaces thereof; and at least one adhesion layer positioned on at least one of the five surfaces of the peg, the adhesion layer including one or more of the following: yttrium (y), tin (sn), iron (fe), copper (cu), carbon (c), holmium (ho), gallium (ga), silver (ag), ytterbium (yb), chromium (cr), tantalum (ta), iridium (ir), zirconium (zr), yttrium (y), scandium (sc), cobalt (co), silicon (si), nickel (ni), molybdenum (mo), niobium (nb), palladium (pd), titanium (ti), rhenium (re), osmium (os), platinum (pt), aluminum (al), ruthenium (ru), rhodium (rh), vanadium (v), germanium (ge), tin (sn), magnesium (mg), iron (fe), copper (cu), tungsten (w), hafnium (hf), carbon (c), boron (b), holmium (ho), antimony (sb), gallium (ga), manganese (mn), silver (ag), indium (in), bismuth (bi), zinc (zn), ytterbium (yb), and combinations thereof.. . ... Seagate Technology Llc

09/07/17 / #20170256277

Offset waveguide system with a mode converter and a tapered bend

A read/write head has an input coupler that receives light at a fundamental mode from an energy source. A mode converter of the read/write head converts light from the fundamental mode to a higher-order mode. ... Seagate Technology Llc

09/07/17 / #20170256275

Heater design for fly height control

Implementations described and claimed herein includes a storage device comprising a transducer heat including at least one pair of read/write elements and a heat shaped to thermally protrude regions of the transducer head including the read/write elements. According to one implementation, the heat element includes at least one conductive portion of locally decreased resistance proximal to and between the pair of read/write elements to direct the thermally protruded close point away from a midpoint between the read/write elements.. ... Seagate Technology Llc

09/07/17 / #20170255556

Workload detection and media cache management

Implementations disclosed herein include a method comprising detecting a workload request from a host, estimating a media cache fill-up rate based on the detected workload request, estimating a current media cache usage, predicting, based on the detected workload request, the estimated media cache fill-up rate and the estimated current media cache usage, a workload profile, and determining a preemptive media cache cleaning strategy based on the predicted workload profile.. . ... Seagate Technology Llc

09/07/17 / #20170255211

Method and apparatus for controlling the temperature of components

A method and apparatus for the temperature control of a component within a storage system wherein the storage system includes a heat exchanger in thermal communication with the component to control the temperature of the component. One method includes: generating a flow of heat transfer fluid through the heat exchanger to transfer heat to or from the heat exchanger; receiving a set point signal indicative of the desired temperature of the component in the storage system; receiving temperature data regarding the component and the heat transfer fluid, and generating an output signal to control the flow of heat transfer fluid. ... Seagate Technology Llc

08/31/17 / #20170251573

Fluid connectors for modular cooling systems

Methods, apparatuses, and systems for fluid connections in modular cooling systems for cooling electronic components installed in equipment racks. A cold plate is positioned adjacent to a support manifold in a mated position, where the cold plate comprises a plate connector. ... Seagate Technology Llc

08/31/17 / #20170251050

Cloud storage accelerator

Systems and methods are disclosed for accelerating the delivery of a data file. The data file may be uploaded to a content accelerator connected to a local area network. ... Seagate Technology Llc

08/31/17 / #20170249967

Enlarged substrate for magnetic recording medium

An enlarged substrate configuration for magnetic recording media. In some embodiments, an apparatus comprises a disc shaped member of metal or glass configured as a substrate for a magnetic data recording disc for a 2½ inch form factor data storage device or a 3½ inch form factor data storage device. ... Seagate Technology Llc

08/31/17 / #20170249962

Waveguide light delivery with subwavelength mirror for heat-assisted magnetic recording

A recording head has a near-field transducer proximate a media facing surface of the read/write head. A waveguide overlaps and delivers light to the near-field transducer. ... Seagate Technology Llc

08/31/17 / #20170249961

Data reader with pinned front shield

A data reader may have a magnetoresistive stack consisting of at least magnetically free and magnetically fixed structures. The magnetically fixed structure can be set to a first magnetization direction by a first pinning structure separated from an air bearing surface by a front shield portion of a magnetic shield. ... Seagate Technology Llc

08/31/17 / #20170249958

Nft with mechanically robust materials

A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer comprises an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface. ... Seagate Technology Llc

08/31/17 / #20170249206

On-the-fly error detection algorithm during retry procedure

Technologies are described herein for or enhancing error recovery procedures in a storage device by utilizing on-the-fly error type detection. After a read error has occurred, a number of read retries are performed through an adaptive read channel in the storage device. ... Seagate Technology Llc

08/24/17 / #20170243609

Adaptive write fault thresholds

Systems and methods for determining a relationship between write fault threshold and temperature are described. The systems and methods include measuring an operating temperature of the storage device, determining a current operating temperature of the storage device, determining whether the current operating temperature of the storage device satisfies a temperature threshold, and upon determining the current operating temperature of the storage device satisfies the temperature threshold, modifying a write fault threshold associated with a data track of the storage device.. ... Seagate Technology Llc

08/24/17 / #20170243605

Perpendicular magnetic recording with multiple antiferromagnetically coupled layers

Provided herein is an apparatus including a top continuous layer and a bottom continuous layer under the top continuous layer. The top continuous layer and the bottom continuous layer are antiferromagnetically coupled. ... Seagate Technology Llc

08/24/17 / #20170243603

Disc drive circuitry swap

A method comprises creating calibration data using a first control circuitry of an apparatus, replacing the first control circuitry with a second control circuitry in the apparatus, and operating the apparatus with the second control circuitry using the calibration data. As an example, the apparatus may be a disc drive. ... Seagate Technology Llc

08/24/17 / #20170242794

Associative and atomic write-back caching system and method for storage subsystem

In response to a cacheable write request from a host, physical cache locations are allocated from a free list, and the data blocks are written to those cache locations without regard to whether any read requests to the corresponding logical addresses are pending. After the data has been written, and again without regard to whether any read requests are pending against the corresponding logical addresses, metadata is updated to associate the cache locations with the logical addresses. ... Seagate Technology Llc

08/24/17 / #20170242613

Processing circuit controlled data storage unit selection

Apparatus and method for managing data in a multi-device data storage system. In some embodiments, a control board interconnects a plurality of storage devices and supports at least first and second switch circuits each operationally connected to the respective storage devices. ... Seagate Technology Llc

08/17/17 / #20170236592

Establishing parameters of subsequent read retry operations based on syndrome weights of prior failed decodings

A syndrome weight of failed decoding attempts is used to select parameters for future read retry operations. The following exemplary steps are performed until a decoding success or a predefined limited number of readings is reached: (i) reading a codeword using different read threshold voltages; (ii) mapping the readings to a corresponding likelihood value using a likelihood value assignment; and (iii) recording a syndrome weight for failed decoding attempts of the readings using the different read threshold voltages. ... Seagate Technology Llc

08/17/17 / #20170236534

Write current switching in a data storage device

Method and apparatus for enhancing write current switching efficiencies during data write operations in a data storage device. In some embodiments, write data are described in the form a sequence of symbols of nt length where t is a channel clock rate and n is an integer over a selected range. ... Seagate Technology Llc

08/17/17 / #20170233677

Lubricant composition for lapping ceramic material, and related methods

Disclosed herein are embodiments of a method of making a lubricant composition for lapping a ceramic material. The method includes mixing a base lubricant component and a powdered wax composition component to form the lubricant composition. ... Seagate Technology Llc

08/10/17 / #20170230178

Encryption key storage and modification in a data storage device

Methods, systems, and devices are described for encryption key storage and modification in a data storage device. A portion of an encryption key may be stored in a first storage medium, and one or more bits of the encryption key may be stored in a one-time writable storage location. ... Seagate Technology Llc

08/10/17 / #20170229145

Fragmented data storage bands

An implementation of a system disclosed herein provides a method for managing data streams of sequential nature, wherein the method writes the sequential chunks (fragments) directly to an open band in the order these are received from the host and includes determining an end of the incoming data write request related to streaming data and in response to the determination of the end of the incoming data write request related to streaming data, copying remaining data from a current physical band mapped to logical block addresses lbas related to the data write requests to the allocated (open) band.. . ... Seagate Technology Llc

08/10/17 / #20170228174

Redundant write transfer detection

Systems and methods for redundant write transfer detection are described. In one embodiment, the systems and methods may include identifying a starting logical block address (lba) associated with a request to write a first data set to the storage device, storing the first data set on a storage medium of the storage device, storing the identified starting lba of the first data set in a memory associated with the storage device, identifying a starting lba associated with a request to write a second data set to the storage device, comparing the starting lba of the second data set to the starting lba of the first data set stored in the memory, and upon identifying a match between the starting lba of the second data set and the starting lba of the first data set, suspending the request to write the second data set to the storage device.. ... Seagate Technology Llc

08/03/17 / #20170221744

Positioning apparatus

A method includes moving a sensor and an article at a first speed to position the sensor into a reference position relative to an article fixture. The sensor and the article are moved at a second speed as the sensor approaches the reference position. ... Seagate Technology Llc

08/03/17 / #20170221510

Data reader with front shield coupling structure

A data reader may consist of at least a magnetoresistive stack positioned on an air bearing surface. A portion of the magnetoresistive stack may be set to a first fixed magnetization by a pinning structure separated from the air bearing surface by a front shield that is set to a second fixed magnetization by a biasing structure. ... Seagate Technology Llc

08/03/17 / #20170221506

Thin data reader cap

A data reader may have a magnetoresistive stack with a magnetically free layer decoupled from a first shield by a cap. The cap can have one or more sub-layers respectively configured with a thickness of 4 nm or less as measured parallel to a longitudinal axis of the magnetoresistive stack on an air bearing surface.. ... Seagate Technology Llc

08/03/17 / #20170220473

Distributed media cache

Zones of a magnetic recording medium are allocated as a respective plurality of distributed media caches arranged in in a predetermined order. For each of a plurality of caching events, cache data is written to one or more of the distributed media caches. ... Seagate Technology Llc

08/03/17 / #20170220264

Zone forward drive management

Various zone forwarding management techniques disclosed herein generally provide efficient methods of data caching, steering, mapping, and migration to reduce write amplification and command latency. In one implementation, a zone-forward storage medium management method includes receiving commands to write data sets to target lbas included in a consecutive sequence of lbas, selectively mapping the sequence of lbas to a plurality of contiguous physical zones, and selectively writing the data sets to the physical zones. ... Seagate Technology Llc

07/27/17 / #20170213571

Near field transducers (nfts) and methods of making

Methods of forming a nft the methods including forming a hard mask positioned over at least a portion of the rod, the hard mask including at least one layer; patterning a resist mask over the hard mask, the resist mask having an edge positioned over at least a portion of the rod; etching a portion of the hard mask to expose a back edge of the rod and to form a back edge of the hard mask, wherein the back edge of the rod is equivalent to the back edge of the peg; and wherein a forward portion of the rod which is the portion of the rod forward of the back edge is covered by the hard mask; forming a disc mask including a void configured to form a disc of a nft, the disc mask being formed over at least a portion of the hard mask so that the exposed back edge of the rod is within the void configured to form the disc; etching an area exposed in the void of the disc mask to remove both a rear portion of the rod and the surrounding dielectric up to the back edge of the hard mask edge; depositing a disc material in the etched void, wherein the back edge of the hard mask defines the front edge of the disc and the back edge of the rod is in contact with the front edge of the disc; and polishing the deposited disc material to form a top surface substantially planar with the top of the forward rod portion.. . ... Seagate Technology Llc

07/27/17 / #20170213570

Devices including an amorphous gas barrier layer

Devices that include a near field transducer (nft); an amorphous gas barrier layer positioned on at least a portion of the nft; and a wear resistance layer positioned on at least a portion of the gas barrier layer.. . ... Seagate Technology Llc

07/27/17 / #20170212693

Framework for balancing robustness and latency during collection of statistics from soft reads

An apparatus includes a memory and a controller. The memory includes a plurality of memory devices. ... Seagate Technology Llc

07/20/17 / #20170206979

Retention-drift-history-based non-volatile memory read threshold optimization

Methods, systems and computer-readable storage media for selecting a retention drift predictor scheme, reading retention drift history associated with reference cells of a plurality of groups of pages of a non-volatile memory (nvm), and predicting values for an optimal read threshold voltage of at least some of the plurality of groups of pages. The predicting of values for an optimal read threshold voltage may be based at least on the selected retention drift predictor scheme and the read retention drift history.. ... Seagate Technology Llc

07/20/17 / #20170206927

Interlaced magnetic recording super parity

A storage device includes a storage medium having a plurality of data tracks. At least one data track of the plurality of data tracks includes a number of super parity sectors. ... Seagate Technology Llc

07/20/17 / #20170206917

Write coil cooling arrangement at air bearing surface

A slider comprises an air bearing surface (abs) and is configured to interact with a magnetic recording medium. A writer is provided on the slider and comprises a write coil having a media-facing surface situated at the abs. ... Seagate Technology Llc

07/20/17 / #20170206166

Cache bypass utilizing a binary tree

A storage command is received at a block level interface from a file system. The storage command is associated with a window of a virtual drive. ... Seagate Technology Llc

07/20/17 / #20170206161

Multi-tiered caching for data storage management in a device

A data storage device includes one or more storage media that include multiple physical storage locations. The device also includes at least one cache memory having a logical space that includes a plurality of separately managed logical block address (lba) ranges. ... Seagate Technology Llc

07/13/17 / #20170201042

Electrical connector with force balancing

As may be implemented in accordance with one or more embodiments, an electrical connector such as a low-temperature co-fired ceramic (ltcc) connector is sealed to an opening in a base deck having bottom and/or side walls that define a cavity. A mechanical component is coupled to balance forces applied to opposing surfaces of the electrical connector, which can mitigate the application of high forces to connector pins and/or to the connector itself. ... Seagate Technology Llc

07/13/17 / #20170200479

Magnetic stack including cooling element

Various embodiments of a magnetic stack are disclosed. In one or more embodiments, the magnetic stack includes first and second shield layers, and a magnetically responsive lamination disposed between the first and second shield layers. ... Seagate Technology Llc

07/13/17 / #20170200469

Band rewrite optimization

Implementations disclosed herein provide a method comprising comparing high-latency data sectors of a storage band, the high-latency data sectors having latency above a predetermined threshold, with target sectors for storing new data to determine one or more of the high-latency data sectors that may be skipped during retrieval of at-rest data from the storage band.. . ... Seagate Technology Llc

07/13/17 / #20170200468

Magnetic storage device readers

Implementations described and claimed herein includes a storage device comprising a plurality of readers, including a first subset of readers configured to read a first subset of tracks and a second subset of readers configured to read a second subset of tracks, the first subset of tracks being wider than the second subset of tracks. In another implementation, the readers in the first subset of readers are wider than the readers in the second subset of readers. ... Seagate Technology Llc

07/13/17 / #20170199682

System, method, and computer program product for increasing spare space in memory to extend a lifetime of the memory

Methods, systems and computer-readable storage media for increasing spare space in a storage subsystem including a flash memory, extending a lifetime of the storage subsystem to achieve a stored selected minimum lifetime based at least in part as a result of the increasing spare space, and identifying at least one aspect associated with the lifetime of the storage subsystem. The storage subsystem may include compressed data stored in the flash memory.. ... Seagate Technology Llc

07/06/17 / #20170194022

Recessed hardmask used to form hamr nft heat sink

A method involves depositing a near-field transducer on a substrate of a slider. The near-field transducer comprises a plate-like enlarged portion and a peg portion. ... Seagate Technology Llc

07/06/17 / #20170192476

Portable storage device with charge reservoir for higher current operations

An apparatus includes a communication interface, a controller, and a power section. The communication interface is configured to receive power from an external host to the apparatus. ... Seagate Technology Llc

06/29/17 / #20170186593

Contoured target for sputtering

Provided herein is an apparatus that includes a body with a top surface and a recess in the top surface. The top surface, excluding the recess, is substantially planar. ... Seagate Technology Llc

06/22/17 / #20170178672

Adaptive write fault thresholds

Systems and methods for determining a relationship between write fault threshold and temperature are described. The systems and methods include measuring an operating temperature of the storage device, determining a current operating temperature of the storage device, determining whether the current operating temperature of the storage device satisfies a temperature threshold, and upon determining the current operating temperature of the storage device satisfies the temperature threshold, modifying a write fault threshold associated with a data track of the storage device.. ... Seagate Technology Llc

06/22/17 / #20170178669

Esd protection surface charge control recording head

Electrostatic discharge protection can be afforded to a data recording head in accordance with various embodiments. A data recording head may consist of a circuit having a preamp ground connected to a ground substrate via a ground trace. ... Seagate Technology Llc

06/22/17 / #20170177236

Internal copy-back with read-verify

Systems and methods for internal copy-back with read-verify are described. In one embodiment, a storage device includes a controller to select a first single level cell (slc) page of a plurality of slc pages on the storage device to transfer to a triple level cell (tlc) page. ... Seagate Technology Llc

06/15/17 / #20170169842

Methods of forming near field transducers and near field transducers formed thereby

A method of forming a near field transducer (nft), the method including the steps of depositing a plasmonic material; depositing an encapsulant material on at least a portion of the plasmonic material; and implanting ions into at least a portion of the plasmonic material through the encapsulant material.. . ... Seagate Technology Llc

06/08/17 / #20170164501

Storage enclosure carrier which supports multiple storage devices

Method and apparatus for populating and operating a storage enclosure carrier with multiple hot swappable storage devices. In some embodiments, a carrier housing having length, width and thickness dimensions is adapted to accommodate at least one hard disc drive (hdd) having a selected hdd form factor and configured for engagement in a storage enclosure housing. ... Seagate Technology Llc

06/08/17 / #20170162268

Reduction or elimination of a latency penalty associated with adjusting read thresholds for non-volatile memory

Channel information and channel conditions determined by an offline tracking process are used to determine whether or not an adjustment to the read reference voltage can be avoided altogether without detrimentally affecting performance, or, alternatively, to determine a precision with which a read reference voltage adjustment should be made. If it is determined based on the channel conditions that a read reference voltage adjustment can be avoided altogether, read performance is improved by reducing the probability that a read reference voltage adjustment needs to be made during normal read operations. ... Seagate Technology Llc

06/08/17 / #20170162222

Laser mode hopping detection for heat-assisted magnetic recording device

Methods and apparatuses for detecting mode hopping in a laser diode or other optical energy source in heat-assisted magnetic recording. An output power of the laser diode or other optical energy source is measured and the output power is differentiated over time to determine a rate of change. ... Seagate Technology Llc

06/08/17 / #20170161191

Self-journaling and hierarchical consistency for non-volatile storage

A non-volatile storage system having non-volatile memory (nvm) provides self-journaling and hierarchical consistency, enabling low-latency recovery and force unit access handshake. Mappings between host addresses and addresses in the nvm are maintained via one or more map entries, enabling locating of host data written to the nvm. ... Seagate Technology Llc

06/08/17 / #20170160967

Scalable storage protection

The disclosure is directed to protecting data of a scalable storage system. A scalable storage system includes a plurality of nodes, each of the nodes having directly-attached storage (das), such as one or more hard-disk drives and/or solid-state disk drives. ... Seagate Technology Llc

06/08/17 / #20170157643

Method of surface tension control to reduce trapped gas bubbles

A pattern imprint template incudes a patterned recesses and a layer formed over the patterned recesses. The pattern recesses form a pattern in a resist when brought in contact with a substrate with a resist thereon. ... Seagate Technology Llc

06/01/17 / #20170155409

Ldpc erasure decoding for flash memories

A solid-state disk (ssd) controller uses ldpc decoding to enable flash memory accesses with improved latency and/or error correction capabilities. With slc flash memory having a ber less than a predetermined value, the ssd controller uses a 1-bit read (single read) hard-decision ldpc decoder to access the flash memory. ... Seagate Technology Llc

06/01/17 / #20170155224

Optical signal waveguide dispersion filter

An apparatus includes a curved multimode polymer waveguide having at least one inflection point and a doped region being doped with an amplifying dopant. An optical pump source or electrical pump source is configured to excite the doped region and amplify the optical signal transmitting along the curved multimode polymer waveguide.. ... Seagate Technology Llc

06/01/17 / #20170154646

Apparatus and method for setting slider surface potential

An apparatus includes a slider body of a disk drive. The slider body is electrically coupled to a plurality of end bond pads. ... Seagate Technology Llc

06/01/17 / #20170153901

System file management on a storage device

A method or system comprises reading content of a plurality of system files from storage media of a storage device, generating a master storage device system file, and storing the master storage device system file on the storage media at a master system file location. The location of the master system file is provided to boot firmware or hardware. ... Seagate Technology Llc

05/18/17 / #20170140782

Gimbal deflection inhibitor for head gimbal assembly

A method for assembling a head-gimbal assembly of a hard disk drive, the method including the steps of dispensing adhesive onto a top surface of a gimbal tongue, wherein the gimbal tongue is positioned adjacent to a load beam with a dimple extending from its top surface, and wherein the gimbal tongue is configured with at least one support feature that inhibits its deformation toward the dimple when subjected to downward pressure with respect to the dimple; positioning a slider on which a magnetic head is mounted adjacent to the top surface of the gimbal tongue; and pressing the slider onto the adhesive and toward the dimple of the load beam.. . ... Seagate Technology Llc

05/18/17 / #20170140781

Reader with free layer experiencing opposite phase-shifted media torques

A read sensor that includes an unbalanced synthetic antiferromagnetic (saf) free layer structure. The unbalanced saf free layer structure includes a first magnetic layer having a first magnetic moment value and a second magnetic layer having a second magnetic moment value that is different from the first magnetic moment value. ... Seagate Technology Llc

05/18/17 / #20170136396

Filtration, filter characterization, and methods and apparatuses therefor

Aspects of the disclosure are directed to apparatuses and methods involving filters and detection of operation thereof. As may be consistent with one or more embodiments, an apparatus includes a fixture having mechanical components that hold a filter. ... Seagate Technology Llc

05/11/17 / #20170134343

Smart storage with vpn and discovery

Systems and methods for independently secured storage are described. In one embodiment, a storage device includes a network adapter to discover a remote storage device and a virtual private network (vpn) client to establish a secure connection between the storage device and the remote storage device. ... Seagate Technology Llc

05/11/17 / #20170134053

Fixed point conversion of llr values based on correlation

An apparatus includes a memory and a controller. The memory may be configured to store data. ... Seagate Technology Llc

05/11/17 / #20170133098

Fast soft data by detecting leakage current and sensing time

Systems and methods for low latency acquisition of soft data from a memory cell based on a sensing time and/or a leakage current are described. In one embodiment, the systems and methods may include applying a first read voltage to a word line of a page of memory cells selected by a processor of a flash memory device for a read operation, applying a pass voltage to word lines associated with one or more different pages of memory cells of the memory block, upon applying the first read voltage sensing whether a bit line of a memory cell in the selected page conducts, measuring a side effect associated with sensing whether the bit line of the memory cell in the selected page conducts, and assigning a llr value to the memory cell as a soft ldpc input based at least in part on the measured side effect.. ... Seagate Technology Llc

05/11/17 / #20170133052

Read head characteristic pre-detection

Implementations disclosed herein provide a method comprising applying voltage to a read head during an unload state, detecting characteristic read head data, and storing the detected characteristic read head data in a buffer. In another implementation, the method further comprises performing a read retry operation in response to a read failure, reading the detected characteristic read head data from the buffer, determining if the detected characteristic read head data meets a threshold for a first predetermined criterion, performing a correction operation if the threshold for the first the first predetermined criterion is met, determining whether a media sector is read successfully, and ending the read retry operation if the media sector is read successfully.. ... Seagate Technology Llc

05/11/17 / #20170133047

Selective write power variability for magnetic recording

A storage device includes a storage controller that controls a writer to generate a magnetic field at an air-bearing surface (abs) of a storage medium and to selectively alter a strength of the magnetic field by a predetermined amount when writing data to select data tracks on the storage medium.. . ... Seagate Technology Llc

05/11/17 / #20170133043

Single coil turn data writer

A data writer may be configured with at least a write pole continuously extending from an air bearing surface to a via. The write pole can contact at least one yoke that contacts the write pole. ... Seagate Technology Llc

05/11/17 / #20170133042

Write pole wrap-around shield with gap lamination

A data writer can have at least a write pole laterally disposed between first and second side shields and vertically disposed between a wrap-around shield and a front shield. The write pole may be separated from the side shields and the wrap-around shield by a lamination of first and second non-magnetic layers.. ... Seagate Technology Llc

05/11/17 / #20170132059

Storage drive monitoring

Systems and methods for real-time storage drive monitoring are described. In one embodiment, the method may include monitoring one or more aspects of a storage drive located in a storage enclosure, detecting, based at least in part on the monitoring, an anomaly in relation to an operation of the storage drive, and communicating information regarding the anomaly to a remote computing device.. ... Seagate Technology Llc

05/11/17 / #20170131902

Multi-tiered memory with different metadata levels

Method and apparatus for managing data in a memory. In accordance with some embodiments, a data object is stored in a first non-volatile tier of a multi-tier memory structure. ... Seagate Technology Llc

05/04/17 / #20170125114

Read retry operations with estimation of written data based on syndrome weights

Methods and apparatus are provided for read retry operations that estimate written data based on syndrome weights. One method comprises reading a codeword from a memory multiple times using multiple read reference voltages; obtaining a syndrome weight for each of the readings of the codeword; identifying a given reading of the codeword having a substantially minimum syndrome weight; and estimating a written value of the codeword based on the given reading. ... Seagate Technology Llc

05/04/17 / #20170125111

Read threshold voltage adaptation using bit error rates based on decoded data

A read threshold voltage for a memory is adjusted based on a bit error rate based on decoded data for a plurality of read threshold voltages. The read threshold voltage can be adjusted by reading the memory at a current read threshold voltage to obtain a read value; applying a hard decision decoder to the read value; determining if the hard decision decoder converges for the read value to a converged word; storing bits corresponding to the converged word as reference bits and, if the hard decision decoder converges, (i) computing a bit error rate for the current read threshold voltage based on the reference bits; (ii) adjusting the current read reference voltage to a new read threshold voltage; and (iii) reading the memory at the new read threshold voltage to obtain a new read value, until a threshold is satisfied; and once the threshold is satisfied, selecting the read threshold voltage based on the bit error rates.. ... Seagate Technology Llc

05/04/17 / #20170125110

Adaptive read threshold voltage tracking with separate characterization on each side of voltage distribution about distribution mean

Methods and apparatus are provided for adaptive read threshold voltage tracking with separate characterization on each side of a voltage distribution about a distribution mean. A read threshold voltage for a memory is adjusted by determining statistical characteristics of two adjacent memory levels based at least in part on a type of statistical distribution of the memory levels and a distribution of data values read from cells using a plurality of read threshold voltages, wherein the statistical characteristics of the two adjacent memory levels are characterized independently on two sides about at least one mean of the statistical distribution; computing an adjusted read threshold voltage associated with the two adjacent memory levels by using the statistical characteristics of the two adjacent memory levels; and updating the read threshold voltage based on the adjusted read threshold voltage. ... Seagate Technology Llc

05/04/17 / #20170125089

Adaptive read threshold voltage tracking with gap estimation between default read threshold voltages

Methods and apparatus are provided for adaptive read threshold voltage tracking with gap estimation between default read threshold voltages. A read threshold voltage for a memory is adjusted by estimating a gap between two adjacent default read threshold voltages; determining statistical characteristics of two adjacent memory levels based at least in part on a type of statistical distribution of the memory levels, a distribution of data values read from one or more cells using a plurality of read threshold voltages and the gap; computing an adjusted read threshold voltage associated with the two adjacent memory levels by using the statistical characteristics of the two adjacent memory levels; and updating the read threshold voltage with the adjusted read threshold voltage. ... Seagate Technology Llc

05/04/17 / #20170125066

Environmentally controlling an enclosure

An apparatus and associated method contemplating a sealed container operably enclosing a storage device in an operating environment. A storage device controller is operably coupled to the storage device and configured to monitor operational parametric values of the storage device. ... Seagate Technology Llc

05/04/17 / #20170125049

Apparatus for methods for aligned servo-related features

Provided herein is a method, including creating a first pattern in a data region of a substrate, and creating a second pattern in a servo region of a substrate. A circumferential line pattern is created overlapping the first pattern to create rectangle-shaped protrusions in the data region of the substrate. ... Seagate Technology Llc

05/04/17 / #20170125048

Angled near-field transducer and waveguide

An apparatus comprises a waveguide having an input end that receives energy in a transverse electric (te00) mode from an energy source along a substrate-parallel plane. The apparatus also includes a near-field transducer located proximate an output end of the waveguide that receives the energy in the te00 mode. ... Seagate Technology Llc

05/04/17 / #20170125047

Magnetic devices with overcoats

A magnetic device including a magnetic writer; and an overcoat positioned over at least the magnetic writer, the overcoat including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof.. . ... Seagate Technology Llc

05/04/17 / #20170125046

Read head free layer having front and rear portions biased at different levels

A reader having a bearing surface, a free layer, and a free layer biasing structure. The free layer biasing structure includes at least one side shield that applies a first bias field level to a front portion of the free layer that is nearest to the bearing surface and applies a second bias field level to a rear portion of the free layer that is farthest from the bearing surface. ... Seagate Technology Llc

05/04/17 / #20170125043

Devices including a multilayer gas barrier layer

Devices that include a near field transducer (nft); a multilayer gas barrier layer positioned on at least a portion of the nft, the multilayer gas barrier layer including at least a first and a second sublayer, where the second gas barrier sublayer is positioned on the first gas barrier sublayer, the first gas barrier sublayer is positioned adjacent the nft and the second gas barrier sublayer is positioned adjacent the wear resistant layer, the first and second sublayers independently have thicknesses from 0.01 nm to 5 nm; and a wear resistance layer positioned on at least a portion of the gas barrier layer.. . ... Seagate Technology Llc

05/04/17 / #20170123913

Process for verification of randomly generated i/o requests

A sequence number is assigned to a data storage operation targeted for a persistent data storage device. The sequence number is used to seed a random number generator. ... Seagate Technology Llc

05/04/17 / #20170123891

Write mapping to mitigate hard errors via soft-decision decoding

An apparatus includes an interface and a control circuit. The interface may be configured to process read/write operations to/from a memory. ... Seagate Technology Llc

05/04/17 / #20170123734

Ordering a plurality of write commands associated with a storage device

Methods, systems, and computer-readable storage media for identifying randomly ordered write commands by a storage device enabled to communicate with a drive compatible with a storage protocol enabling command execution in random order. The storage device may determined a particular order of the identified write commands. ... Seagate Technology Llc

05/04/17 / #20170123733

Storage system with application to nvm address, span, and length

Methods, systems and computer-readable storage media for determining, by a storage controller, a read unit address and encoded length information of one of the plurality of read units of a non-volatile memory (nvm) based at least in part on a page address of a particular one of a plurality of pages in a storage space address. The encoded length information may be decoded. ... Seagate Technology Llc

04/27/17 / #20170115934

Logical block addresses used for executing host commands

A logical block address space of a storage compute device is reserved for use in executing commands from a host. First data is received at a first portion of the logical block address space, the first data causing a computation to be performed by the storage compute device. ... Seagate Technology Llc

04/20/17 / #20170110158

Cavity sealing apparatus

Certain exemplary aspects of the present disclosure are directed towards a manufacturing apparatus including a first chamber having a first cavity, and a first actuator. The first actuator aligns the opening of the first chamber to an opening in a second chamber having a second cavity, sealing the first cavity to the second cavity. ... Seagate Technology Llc

04/13/17 / #20170103785

Particulate filter

Certain exemplary aspects of the present disclosure are directed towards an apparatus including a base deck forming a sealed cavity. A filter coupled to a surface of the base deck within the cavity filters particulate from a flow of gas in the cavity. ... Seagate Technology Llc

04/13/17 / #20170103781

Changing characteristics of signal patterns to reduce adjacent track interference

First and second signal patterns are used to write corresponding portions of first and second adjacent tracks to a magnetic storage medium. A characteristic of the first signal pattern is changed based on the second signal pattern, the changing of the characteristic reducing an adjacent track interference affecting the second track.. ... Seagate Technology Llc

04/13/17 / #20170102991

Internal copy-back with read-verify

Systems and methods for internal copy-back with read-verify are described. In one embodiment, a storage device includes a controller to select a first single level cell (slc) page of a plurality of slc pages on the storage device to transfer to a triple level cell (tlc) page. ... Seagate Technology Llc

04/13/17 / #20170101202

Method and apparatus with multiple cavities

Certain exemplary aspects of the present disclosure are directed towards dual cavity apparatus and related methods involving hermetically sealing the cavities by evacuating and atmosphere therein, filling the cavity with a gas, and sealing the gas in the cavities. This evacuation and fill approach is carried out through openings that provide access to the cavities. ... Seagate Technology Llc

04/06/17 / #20170099190

Data center rack flexplane

The disclosed technology provides a system comprising a data center rack including one or more enclosures, each of the enclosures including one or more devices, and a plurality of flexplane units configured to interconnect with each other so as to interconnect a plurality of nodes in a torus topology, the one or more of the plurality of nodes is connected to one or more of the devices.. . ... Seagate Technology Llc

04/06/17 / #20170098459

Shielding and electrical contact design for devices with two or more read elements

A magnetic read head including a first read element magnetically coupled to a bottom shield; a second read element magnetically coupled to a top shield; a magnetic shielding structure that magnetically shields the first read element from the second read element; and a first electrical contact electrically coupled to the bottom shield, a second electrical contact electrically coupled to the top shield and a third electrical contact electrically coupled to the magnetic shielding structure.. . ... Seagate Technology Llc

03/30/17 / #20170094833

Computing system enclosure airflow management

The disclosed technology provides systems and methods for an enclosure system with optimized internal dynamically controllable airflow distribution. The systems include a computing system enclosure, and an electroactive film adhered to a surface of the computing system enclosure and configured to redirect airflow distribution in the computing system enclosure. ... Seagate Technology Llc

03/30/17 / #20170094832

Computing system enclosure airflow distribution management

The disclosed technology provides systems and methods for an enclosure system with optimized internal dynamically controllable airflow distribution. The systems include a computing system enclosure, comprising a plurality of baffles or airflow redirection modules, and a controller configured to control an orientation of one or more of the plurality of baffles or airflow redirection modules for redirection of airflow distribution within the computing system enclosure based on a determined computing system enclosure profile. ... Seagate Technology Llc

03/30/17 / #20170094782

Printed circuit board with flux reservoir

Method and apparatus for establishing an electrical interconnection between an electrical lead and a printed circuit board (pcb), such as a pcb used in a data storage device. In some embodiments, the pcb includes a multi-layer substrate having at least one conductive layer and at least one electrically insulative layer. ... Seagate Technology Llc

03/30/17 / #20170093427

Systems and methods for soft data utilization in a solid state memory system

Systems and methods relating generally to solid state memory, and more particularly to systems and methods for recovering data from a solid state memory. An example data processing system includes a first circuit operable to yield a modified soft data set from a data set accessed from a solid state memory device, and a second circuit operable to apply a data decoding algorithm to the modified soft data to yield a decoded output.. ... Seagate Technology Llc

03/30/17 / #20170092318

Laser adjustment during field operation of a heat-assisted magnetic recording data storage device

During field operation of a heat-assisted magnetic recording data storage device, a laser adjustment procedure is performed. The laser adjustment procedure involves writing on a recording medium at least three tracks. ... Seagate Technology Llc

03/30/17 / #20170092317

Multiple layer fept structure

One embodiment described herein is directed to a method involving depositing a seed layer on a substrate, the seed layer comprising a1 phase fept with a ratio of pt of fe greater than 1:1. A main layer is deposited on the seed layer, the main layer comprising a1 phase fept with a ratio of pt to fe of approximately 1:1. ... Seagate Technology Llc

03/30/17 / #20170092313

Head-medium contact detection using an oscillating electromagnetic force

An apparatus comprises circuitry configured to apply an ac signal having a frequency to one of a slider of a recording head and a magnetic recording medium. The applied ac signal causes an oscillation in an electrostatic force and clearance between the slider and the medium at the frequency of the ac signal. ... Seagate Technology Llc

03/30/17 / #20170092311

Write head offset for shingled magnetic recording (smr) disk drives

Methods, systems, and apparatuses are described for provisioning storage devices. An example method includes determining a write status of an adjacent track that is adjacent to a target track of a shingled magnetic recording (smr) disk drive. ... Seagate Technology Llc

03/30/17 / #20170092306

Magnetic recording head front shield formation

Implementations disclosed herein provide an apparatus comprising a write pole, and a two-layer front shield formed on the write pole, the front shield comprising, a first dielectric material formed on the first layer of the front shield, an active shield control (asc) device formed between the two layers of the front shield on the first dielectric material configured to synchronize the response to a magnetomotive force (mmf) of a write pole and the front shield, and a second dielectric material formed on the asc device, wherein the second layer of the front shield is formed only on top of the second dielectric material and the first layer of the front shield.. . ... Seagate Technology Llc

03/30/17 / #20170092305

Lateral spin valve reader with in-plane detector

A lateral spin valve reader includes a detector located proximate to a bearing surface of the reader, a spin injector located away from the bearing surface, and a channel layer that substantially extends from the detector to the spin injector. The channel layer and the detector are substantially in a same plane.. ... Seagate Technology Llc

03/30/17 / #20170092302

Data reader with spin filter

A data reader may be configured with at least a detector stack positioned on an air bearing surface and consisting of a spin accumulation channel continuously extending from the air bearing surface to an injector stack. The injector stack can have at least one cladding layer contacting the spin accumulation channel. ... Seagate Technology Llc

03/30/17 / #20170092300

Data writer with graded side shields

A data writer can have at least a write pole separated from first and second side shields by a continuous dielectric gap layer. Each side shield may have first and second shield sub-layers configured with different magnetic moments that increase relative to the sub-layer's distance from the write pole. ... Seagate Technology Llc

03/30/17 / #20170092277

Search and access system for media content files

Method and apparatus for managing media content files. In some embodiments, a processing circuit is used to identify a reference audio sequence (e.g., spoken words) in an audio portion of a media content file. ... Seagate Technology Llc

03/30/17 / #20170090776

Compression sampling in tiered storage

A method for data steering in tiered storage is described. In one embodiment, the method includes ranking a plurality of storage areas of a storage device according to at least one property of the plurality of storage areas. ... Seagate Technology Llc

03/30/17 / #20170090775

Compression sampling in tiered storage

A method for data steering in tiered storage is described. In one embodiment, the method includes ranking storage areas of a storage device according to latency of access. ... Seagate Technology Llc

03/30/17 / #20170090767

Nondisruptive device replacement using progressive background copyback operation

Apparatus and method for managing multi-device storage systems. In some embodiments, a distributed data set is stored across a group of storage devices. ... Seagate Technology Llc

03/30/17 / #20170090764

Data randomization using memory block access counts

Method and apparatus for data storage. In some embodiments, a solid-state memory includes an array of non-volatile memory cells arranged into erasable blocks. ... Seagate Technology Llc

03/23/17 / #20170085364

Self-adapting phase-locked loop filter for use in a read channel

A phase-locked loop (pll) filter of a read channel includes a filter portion having an input coupled to delay circuitry having an output. The input of the filter portion is configured to receive a phase error signal. ... Seagate Technology Llc

03/23/17 / #20170085277

Priori information based post-processing in low-density parity-check code decoders

A low-density parity-check decoder utilizes information about hard errors in a storage medium to identify bit locations to flip log-likelihood ratios while attempting to decode codewords. The decoder iteratively flips and saturates log-likelihood ratios for bits at hard error locations and re-decodes until a valid codeword is produced. ... Seagate Technology Llc

03/23/17 / #20170084300

Servo integrated bpm template

Provided herein is a method including forming a data zone guiding pattern and forming a servo zone guiding pattern. A servo pattern and a data pattern are simultaneously formed. ... Seagate Technology Llc

03/23/17 / #20170084299

Waveguide with shaped assistant layer

An apparatus includes a waveguide extending along a light-propagation direction between a light source and a media-facing surface. The waveguide comprises an assistant layer configured to receive light from a light source, truncated with an intermediate bottom cladding layer. ... Seagate Technology Llc

03/23/17 / #20170084298

Waveguide with tapered assistant layer

An apparatus includes a waveguide extending along a light-propagation direction between a light source and a media-facing surface. An assistant layer is configured to receive light from a light source, the assistant layer has a terminating end with a first taper that narrows toward the media-facing surface. ... Seagate Technology Llc

03/23/17 / #20170083463

Selectively enable data transfer based on accrued data credits

Example techniques to selectively enable data transfer using accrued data credits are disclosed. In one aspects of the present disclosure, an apparatus to arbitrate data transfer between a computing host and a storage device across an interface comprises a data transfer limiter to track an amount of data credits used by a data transfer across the interface and an amount of accrued data credits available to the interface. ... Seagate Technology Llc

03/23/17 / #20170083253

Dynamic storage device provisioning

A method or system for allocating the storage space of a storage medium into a permanently allocated media cache storage region, a dynamically mapped media cache storage region, and statically mapped storage region. In one implementation, the dynamically mapped media cache storage region is used for performance and/or reliability enhancing functions.. ... Seagate Technology Llc

03/23/17 / #20170083246

Maximize smr drive capacity

Systems and methods for maximizing shingled magnetic recording (smr) drive capacity are described. In one embodiment, the smr drive may include a main store to store user-accessible data, a media cache and media scratchpad to store internal data temporarily for internal operations, and a storage controller to process read and write requests. ... Seagate Technology Llc

03/23/17 / #20170082553

Photon emitter array

Provided herein is an apparatus including a photon emitter array. The photon emitter array includes a number of photon emitters selectively oriented in a number of polarized orientations. ... Seagate Technology Llc

03/16/17 / #20170076750

Enlarged substrate for magnetic recording medium

A data storage device having a housing member for a selected one of a 3½ inch form factor hard disc drive (hdd) or a 2½ inch form factor hdd. A spindle motor coupled to the housing member supports a rotatable data recording disc with a plurality of data tracks and an outermost perimeter. ... Seagate Technology Llc

03/16/17 / #20170076748

Methods and devices for reducing couple imbalance in a hard drive

In certain embodiments, an apparatus includes a basedeck; a motor coupled to the basedeck and having a rotatable hub; and first, second, third, fourth, and fifth discs coupled to the hub. Three of the five discs are biased against the hub in a first direction and two of the five discs are biased against the hub in a second direction. ... Seagate Technology Llc

03/16/17 / #20170076743

Magnetoresistive sensor with enhanced uniaxial anisotropy

A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. ... Seagate Technology Llc

03/16/17 / #20170075603

Data memory device and controller with interface error detection and handling logic

The present disclosure provides a data storage system including a data memory device and controller having interface error detection and handling logic. In one example, a solid-state data memory device is provided and includes a semiconductor package. ... Seagate Technology Llc

03/16/17 / #20170075597

Techniques for controlling recycling of blocks of memory

The present disclosure relates to examples of controlling recycling of blocks of memory. In one example implementation according to aspects of the present disclosure, a method comprises allocating at least one block of memory selected from a subset of blocks to be written in accordance with an equalizing technique to equalize a variation between blocks of memory based on at least one factor. ... Seagate Technology Llc

03/16/17 / #20170074752

Coupling loss evaluation

The exemplary systems, apparatus, structures, and methods may include an assembly including substrate, an optical waveguide, and an optical access associated with the optical waveguide. Light from the optical access may be measured along the optical waveguide. ... Seagate Technology Llc

03/09/17 / #20170069345

Methods of forming overcoats on magnetic storage media and magnetic storage media formed thereby

Methods of forming a magnetic storage disc, the method including depositing a carbon containing material on a magnetic recording layer to form a carbon containing layer, wherein the carbon containing layer is deposited using chemical vapor deposition, ion beam deposition, or filtered cathodic arc deposition; treating the carbon containing layer with a source of oxygen to form an oxygen layer; and depositing a lubricant on the oxygen layer.. . ... Seagate Technology Llc

03/09/17 / #20170069342

Materials for near field transducers, near field tranducers containing same, and methods of forming

A device including a near field transducer, the near field transducer including gold (au), silver (ag), copper (cu), or aluminum (al), and at least two other secondary atoms, the at least two other secondary atoms selected from: boron (b), bismuth (bi), indium (in), sulfur (s), silicon (si), tin (sn), manganese (mn), tellurium (te), holmium (ho), lutetium (lu), praseodymium (pr), scandium (sc), uranium (u), barium (ba), chlorine (cl), cesium (cs), dysprosium (dy), europium (eu), fluorine (f), germanium (ge), hydrogen (h), iodine (i), rubidium (rb), selenium (se), terbium (tb), nitrogen (n), oxygen (o), carbon (c), antimony (sb), gadolinium (gd), samarium (sm), thallium (tl), cadmium (cd), neodymium (nd), phosphorus (p), lead (pb), hafnium (hf), niobium (nb), erbium (er), zinc (zn), magnesium (mg), palladium (pd), vanadium (v), zinc (zn), chromium (cr), iron (fe), lithium (li), nickel (ni), platinum (pt), sodium (na), strontium (sr), calcium (ca), yttrium (y), thorium (th), beryllium (be), thulium (tm), erbium (er), ytterbium (yb), promethium (pm), neodymium (nd cobalt (co), cerium (ce), lanthanum (la), praseodymium (pr), or combinations thereof.. . ... Seagate Technology Llc

03/02/17 / #20170062019

Disc drive apparatus with hermetically sealed cavity

Certain exemplary aspects of the present disclosure are directed towards a disc drive apparatus. A base deck and a cover are joined to one another by a friction-stir weld along a lip of the cover that extends along a periphery of the cover and over a surface of the base deck. ... Seagate Technology Llc

03/02/17 / #20170061998

Disturbance observer with energy reducing filter

Disturbance rejection in a closed loop multi-actuator system. In some embodiments, a first disturbance observer (dob) circuit is configured to inject a first disturbance rejection signal into an input control signal of a first stage of a multi-stage actuator. ... Seagate Technology Llc

03/02/17 / #20170061994

Methods of forming magnetic devices with variable overcoats

Methods that include depositing a first layer over the entire surface of a structure, the structure having a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate and the magnetic writer includes a near field transducer (nft); depositing a second layer over the entire surface of the first layer; depositing a photoresist material layer over the entire surface of the second layer, the photoresist material layer having a bottom surface in contact with the second layer and an opposing top surface; exposing the photoresist material layer to radiation through the bottom surface of the photoresist material layer via the nft to form a first exposed region; and exposing the photoresist material layer to radiation through the top surface of the photoresist material layer to form a second exposed region.. . ... Seagate Technology Llc

03/02/17 / #20170061993

Data writer coil heater

A data writer may suspend a transducing head from an actuator. The transducing head can consist of a writer coil positioned proximal a write pole. ... Seagate Technology Llc

03/02/17 / #20170060456

Direct hinting for a memory device

A data storage area of a data storage device can be used to communicate information between the data storage device and an external device or software. In some examples, configuration data stored within the data storage area can be used to determine a subset of data to copy or move from a first data storage medium to a second data storage medium. ... Seagate Technology Llc

03/02/17 / #20170057036

Workpiece handling

An apparatus and associated method contemplating handling a workpiece on a surface. A mounting block is selectively movable in a first direction toward the surface. ... Seagate Technology Llc

03/02/17 / #20170056995

Method of forming electrical connections with solder dispensing and reflow

A method for interconnecting multiple components of a head-gimbal assembly with a solder joint, including the steps of positioning a first component adjacent to a second component to provide a connection area between the first and second components, dispensing a solder sphere to a capillary tube comprising tapered walls, wherein the capillary tube is positioned with an exit orifice above the connection area between the first and second components, pressurizing the capillary tube until a predetermined pressure is reached, applying a first laser pulse to the solder sphere to provide a level of thermal energy to liquefy the solder sphere until it falls from the exit orifice toward the connection area between the first and second components, detecting the movement of the liquefied solder sphere after it has exited the exit orifice of the capillary tube, and applying a second laser pulse to reflow the solder sphere to create the solder joint between the first and second components.. . ... Seagate Technology Llc

02/23/17 / #20170052912

Enhanced queue management

A paired queue apparatus and method comprising request and response queues wherein queue head and tail pointer update values are communicated through an enhanced pointer word data format providing pointer indicator information and optional auxiliary information in a single transfer, wherein auxiliary information provides additional system communication without consuming additional bandwidth. Auxiliary information is optionally contained in a response data entry written to a response queue or in a request entry written to a request queue.. ... Seagate Technology Llc

02/23/17 / #20170052740

Sending failure information from a solid state drive (ssd) to a host device

A system, method, and computer program product are provided for a host device to request and obtain failure information from a solid state drive (ssd). In operation, an error is detected during an operation associated with a solid state drive. ... Seagate Technology Llc

02/23/17 / #20170052725

Techniques for providing data redundancy after reducing memory writes

The present disclosure relates to techniques for providing data redundancy after reducing memory writes. In one example implementation according to aspects of the present disclosure, a storage system receives a storage command for providing data redundancy in accordance with a first data redundancy scheme. ... Seagate Technology Llc

02/16/17 / #20170047092

Method of performing read/write process on recording medium, parameter adjustment method, storage device, computer system, and storage medium employing the methods

Methods, apparatuses and systems for detecting defective sectors on a recording medium, the method including calculating a servo gain for each servo sector of a track of a recording medium of a storage device; determining whether the servo gain of each servo sector exceeds a threshold value; and upon determining that the servo gain of a servo sector exceeds the threshold value, determining data sectors included in the servo sector to be defective sectors.. . ... Seagate Technology Llc

02/16/17 / #20170046359

High reliability parity declustering

A method for high reliability parity declustering is described. In one embodiment, the method includes determining a number of available storage devices, dividing a file into a plurality of data units, assigning a number of the plurality of data units to a first parity group of one or more parity groups associated with the file, generating a number of parity units for the number of data units in the first parity group, generating a number of reserve units for the number of data units and the number of parity units in the first parity group, and sequentially allocating the number of data units, the number of parity units, and the number of reserve units of the first parity group across the number of available storage devices.. ... Seagate Technology Llc

02/16/17 / #20170046273

Variable-size flash translation layer

A method for using a variable-size flash translation layer. The method includes reading an entry in a map based on a read logical block address in a read request to obtain both a physical address of a particular page in a memory and information regarding compressed data with a variable size; converting the information to both an address in the particular page and a number of read units in the memory that contain the compressed data; and reading the compressed data from at least the particular page in the memory based on the address and the number of read units.. ... Seagate Technology Llc

02/16/17 / #20170046267

Disk cache allocation

Implementations disclosed herein provide a method comprising determining a workload on a disk cache with a storage device controller, determining a state of a free pool of the disk cache, receiving a data write request to the disk cache, segregating the free pool of the disk cache into a plurality of allocation units, allocating the plurality of allocation units out of order, as compared to a physical arrangement order of the allocation units in the disk cache, based on the workload, and storing data in the plurality of allocation units.. . ... Seagate Technology Llc

02/09/17 / #20170041099

Multiuse data channel

Presented is a data channel with selectable components, such as encoders or decoders. Also, data having different data signal characteristics can be processed through a data channel based on the data signal characteristics. ... Seagate Technology Llc

02/09/17 / #20170040140

Magnet array for plasma-enhanced chemical vapor deposition

Provided herein is an apparatus comprising a deposition chamber with a cathode, and a means for creating an asymmetric field about the cathode.. . ... Seagate Technology Llc

02/09/17 / #20170039098

Device quality metrics using unsatisfied parity checks

An apparatus includes a memory and a controller. The memory may be configured to store data. ... Seagate Technology Llc

02/09/17 / #20170038985

Nonvolatile memory data recovery after power failure

A method for recovery after a power failure. The method generally includes a step of searching at least some of a plurality of pages of a memory to find a first erased page in response to an unsafe power down. ... Seagate Technology Llc

02/09/17 / #20170038816

Data storage power management

Systems and methods for data storage power management are described. In one embodiment, the method includes analyzing metrics collected from one or more storage devices, identifying, based at least in part on analyzing the metrics, a pattern of activity for at least one of the one or more storage devices over a predetermined period of time, generating a control model based at least in part on the identified pattern of activity, and modifying a power mode of at least one of the one or more storage devices based on the control mode. ... Seagate Technology Llc

02/02/17 / #20170034945

Storage device assembly

The disclosed technology includes an open frame storage device assembly for computing equipment. The assembly is configured to vertically suspend carriers, which hold storage devices, from a rack and to interconnect the storage devices to a computer system. ... Seagate Technology Llc

02/02/17 / #20170033805

Scheduling strategies for iterative decoders

An iterative decoder is controlled to iteratively decode a block by performing one or more decoding iterations for the block. The iterative decoder uses a parity-check matrix and can be configured to process that parity-check matrix for parallel, sequential or a combination of parallel and sequential (“hybrid”) parity constraint updates.. ... Seagate Technology Llc

02/02/17 / #20170033278

Data reader with front shield coupling structure

A data reader may consist of at least a magnetoresistive stack positioned on an air bearing surface. A portion of the magnetoresistive stack may be set to a first fixed magnetization by a pinning structure separated from the air bearing surface by a front shield that is set to a second fixed magnetization by a biasing structure. ... Seagate Technology Llc

02/02/17 / #20170032811

Near-field transducer with tapered peg

An apparatus includes a waveguide that delivers energy from an energy source, a write pole located proximate the waveguide at a media-facing surface, and a near-field transducer located proximate the write pole in a down track direction. The near-field transducer includes an enlarged portion and a peg extending from the enlarged portion towards the media-facing surface. ... Seagate Technology Llc

02/02/17 / #20170032810

Bond pad sharing for powering a multiplicity of electrical components of a recording head

An apparatus includes a slider of a recording head comprising a plurality of electrical bond pads coupled to bias sources and a ground pad. Each of a plurality of electrical components of the slider is coupled to at least one of the electrical bond pads. ... Seagate Technology Llc

02/02/17 / #20170032809

Sliders having at least two regions on the trailing edge surface

A slider that includes a leading edge surface; a trailing edge surface; and an air bearing surface (abs) positioned between the leading edge surface and the trailing edge surface, wherein the trailing edge surface includes a read-write element, at least one low surface energy region and at least one high surface energy region.. . ... Seagate Technology Llc

02/02/17 / #20170030831

Surface features by azimuthal angle

Provided herein is an apparatus, including a photon emitter configured to emit photons onto a surface of an article at a number of azimuthal angles; and a processing element configured to process photon-detector-array signals corresponding to photons scattered from surface features of the article and generate one or more surface features maps for the article from the photon-detector-array signals corresponding to the photons scattered from the surface features of the article.. . ... Seagate Technology Llc

01/26/17 / #20170025149

Apparatus and methods using interference in light reflected from articles

Provided herein are apparatus and methods for inspecting articles for features using interference in light reflected from the articles. The interference may be used to detect, distinguish, and/or map features of articles, which features may include, but are not limited to, surface defects. ... Seagate Technology Llc

01/26/17 / #20170025147

Phase error recovery circuitry and method for a magnetic recording device

A recording head is configured to write and read data sectors to and from a recording medium, such as a heat-assisted recording medium. A read channel is coupled to the recording head. ... Seagate Technology Llc

01/26/17 / #20170025141

Method of fabricating a bpm template using hierarchical bcp density patterns

The embodiments disclose a method including patterning a template substrate to have different densities using hierarchical block copolymer density patterns in different zones including a first pattern and a second pattern, using a first directed self-assembly to pattern a first zone in the substrate using a first block copolymer material, and using a second directed self-assembly to pattern a second zone in the substrate using a second block copolymer material.. . ... Seagate Technology Llc

01/26/17 / #20170025140

Apparatus and methods for aligned servo-related features

Provided herein is an apparatus, including a first region of a substrate corresponding to a data region in a patterned recording medium; a first set of protrusions etched out of the first region of the substrate, wherein the protrusions of the first set of protrusions are rectangle shaped; a second region of the substrate corresponding to a servo region in a patterned recording medium; and a second set of protrusions etched out of the second region of the substrate, wherein the second set of protrusions includes radial lines etched into the substrate across chevrons etched out of the substrate.. . ... Seagate Technology Llc

01/26/17 / #20170025139

Apparatuses and methods for absorbing optical energy

Provided herein is an apparatus including a substrate and a magnetic recording layer over the substrate. In addition, a thermochromic layer is over the substrate, wherein the thermochromic layer includes a first optical absorbance at a first temperature and a second optical absorbance at a second temperature.. ... Seagate Technology Llc

01/26/17 / #20170025137

Disc drive actuator bearing cartridge assembly with temperature induced rotational torque mitigation

Various aspects of the present disclosure are directed toward a disc drive actuator assembly including an e-block, a bearing, and a sleeve. The bearing includes an inner race, an outer race and a plurality of balls between the inner and outer races. ... Seagate Technology Llc

01/26/17 / #20170025136

Disc drive actuator assembly with bearing cooling

Various aspects of the present disclosure are directed toward a disc drive actuator assembly including an e-block, a plurality of bearings, and one or more heat transfer components. The heat transfer component(s) operates to conductively draw heat from the plurality of bearings through the e-block, and convectively dissipate the heat into an atmosphere in contact therewith. ... Seagate Technology Llc

01/26/17 / #20170024160

Thinly provisioned disk drives with zone provisioning and compression

Methods, systems, and apparatuses are described for provisioning storage devices. An example method includes specifying a logical zone granularity for logical space associated with a disk drive. ... Seagate Technology Llc

01/26/17 / #20170023866

Bit patterned media template including alignment mark and method of using same

A method is disclosed that includes forming at least one substrate alignment mark and at least one lithography alignment mark in a substrate; forming a seed layer on the substrate; and forming a guide pattern and at least one guide pattern alignment mark in the seed layer, where the at least one guide pattern alignment mark is formed over the at least one substrate alignment mark. The method further includes determining an alignment error of the at least one guide pattern alignment mark relative to the at least one substrate alignment mark; and patterning features on at least one region of the substrate, where the features are positioned on the substrate based on the at least one lithography alignment mark and the alignment error.. ... Seagate Technology Llc

01/19/17 / #20170018284

Thermally assisted writer protrusion determination and control

Method and apparatus for controlling the fly height of a transducer. In some embodiments, a data pattern is written to a rotating data recording surface using a transducer having a write element, a read element and a thermal assist energy source. ... Seagate Technology Llc

01/19/17 / #20170017216

Adaptive multi-stage disturbance rejection

Apparatus and method for controlling the position of a control object using a multi-stage actuator. In some embodiments, a multi-stage actuator is provided with first and second actuation stages adapted to position a control object. ... Seagate Technology Llc

01/12/17 / #20170011760

Linear and rotational adjustment systems

Systems and methods may include a motor and an output shaft apparatus. The output shaft apparatus may be configured to position a manufacturing component using the motor. ... Seagate Technology Llc

01/12/17 / #20170011759

Sensor stabilization in a multiple sensor magnetic reproducing device

A multi-sensor reader that includes a first sensor that has a sensing layer with a magnetization that changes according to an external magnetic field. The first sensor also includes first and second side biasing magnets having a magnetization substantially along a first direction. ... Seagate Technology Llc

01/12/17 / #20170011758

Spin-signal enhancement in a lateral spin valve reader

A lateral spin valve reader that includes a detector structure located proximate to a bearing surface and a spin injection structure located away from the bearing surface. The lateral spin valve reader also includes a channel layer extending from the detector structure to the spin injection structure. ... Seagate Technology Llc

01/12/17 / #20170011755

Devices including a near field transducer (nft), at least one cladding layer and interlayer there between

A device that includes a near field transducer (nft); at least one cladding layer adjacent the nft; and a carbon interlayer positioned between the nft and the at least one cladding layer.. . ... Seagate Technology Llc

01/05/17 / #20170004852

Reader side shield

The implementations disclosed herein allow for formation of a magnetoresistive (mr) sensor shield that shields against both down track and cross-track interference. The shield can be formed in a single deposition step. ... Seagate Technology Llc

01/05/17 / #20170004851

Multiple reader stacks disposed in close proximity

In accordance with one embodiment, a multi-reader can be manufactured so as to be able to read from multiple regions of a storage device contemporaneously during operation. Such a device can be configured, for example, by forming a first wall; forming a second wall; and utilizing the first wall and the second wall to form two adjacent reader stacks.. ... Seagate Technology Llc

01/05/17 / #20170004038

Systems and methods for enhanced data recovery in a solid state memory system

Systems and method relating generally to data processing, and more particularly to systems and methods for accessing a data set from a solid state storage device, using a data decoding circuit to apply a data decoding algorithm to the data set to yield a decoded output, where the decoded output includes at least one error, identifying at least one critical location in the data set, and estimating a voltage associated with the data in the data set corresponding to the critical location.. . ... Seagate Technology Llc

01/05/17 / #20170002859

Adjustable gap for a fluid dynamic bearing

An apparatus includes a stationary sleeve and a shaft operable to rotate with respect to the stationary sleeve. A hub rotates with respect to the stationary sleeve in response to the shaft rotating. ... Seagate Technology Llc








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