Seagate Technology Incorporated

Hyundai Electronics America, Inc.

At&t Global Information Solutions Company

Symbios Logic Inc.

Mark A Gaertner

Ryan James Goss

Brian Thomas Edgar

Jon David Trantham

David Scott Seekins

Bruce Douglas Buch

Luke William Friendshuh

Kevin Arthur Gomez

Andrew Michael Kowles

Mark Alan Heath

Timothy Richard Feldman

Antoine Khoueir

Ara Patapoutian

Mehmet Fatih Erden

David Scott Ebsen

Sumanth Jannyavula Venkata

Michael Joseph Steiner

Jonathan Williams Haines

Raye Abdoulie Sosseh

Evgeny R Kharisov

Josiah Natan Wernow

James David Sawin

Anil Kashyap

Xiong Liu

Wenxiang Xie

Monty Aaron Forehand

Dipeshkumar J Purani

Richard P Michel

Stephen R Cornaby

Jiangnan Lin

Kai Yang

Tong Shirh Stone

Vidur Parkash

Kevin Nghia Dao

Tim Rausch

Riyan Alex Mendonsa

Jason Bryce Gadbois

Jason Charles Jury

Navneeth Kankani

Wayne Howard Vinson

Abhay Tejmal Kataria

Jeffrey Vincent DeRosa

Jason Matthew Feist

Rodney Virgil Bowman

Arvind Sridharan

Kenneth Lawrence Barham

Bruce Dunlop

Wei Zhao

Devon Dallmann

Praveen Viraraghavan

Dallas W Meyer

Jun Cai

Ian Davies

Charles D Binford

Stacey Secatch

Thomas V Spencer

William Michael Radich

Jian Qiang

Deepak Sridhara

Michael H Miller

Edwin Scott Olds

Li Hong Zhang

Joshua Ward Christensen

Robert George Bean

Jimmie Ray Shaver

Harry Tiotantra

Jason Dale Gregg

Travis D Fox

Brett Alan Cook

David Bruce Anderson

Timothy Ted Walker

Paul William Burnett

Paul Alexander Galloway

Steven F Faulhaber

Mukund Channagiri Rao

Scott Robert Warmka

Ajay Narayan Kulkarni

Jeetandra Kella

Abbas Ali

Paul Michael Wiggins

David Christopher Pruett

Brian W Sudman

Chiaming Yang

Kay Hee Tang

Kenneth Hoffman Bates

Bang Cong Nguyen

Bryan David Wyatt

Robert J German

Vidya Krishnamurthy

Yong Yang

Joseph Wach

Chee Hou Peng

Krishna Rameshwara Malakapalli

Joseph S Stoutenburgh

Colin Graham Presly

William C Little

ChuanPeng Ong

Gabriel J Lawson

Bruce Allen Bicknell

JianZhong Zhang

A method includes creating a table with a plurality of cells indicative of intersections of tracks and wedges on a data storage disc surface. The method also includes storing disc pending command information for different disc pending commands in corresponding different cells of the plurality of cells according to locations for the different disc pending commands on the data storage disc surface. The method further includes searching the table for one or more next disc pending commands of the different disc pending commands to schedule for execution.

Efficient scheduling of data storage disc input/output

Systems and methods are disclosed for electronic device power consumption grading. In some examples, similar electronic devices may consume different amounts of power due to variations in components of the electronic devices. The components can include electrical components (e.g., discrete circuits, integrated circuits, etc.), mechanical components (e.g., motors, traces, etc.), electro-mechanical components (e.g., switches, motors, piezoelectric devices, etc.). Power consumption information for specific components can be determined and a power consumption grading for the specific electronic device can be determined from the power consumption information. A user may then utilize the power consumption grading to optimize a usage of the electronic device.

Electronic device power consumption grading

Failure-domain-specific cryptographic keys for use in control of access to data within failure domains of a storage drive. A unique failure domain-specific cryptographic key may be associated with each of a plurality of failure domains in a storage drive. The failure domains may correspond to any portion of the storage media of a drive that is susceptible to failure while leaving other portions of the storage drive functional. In turn, upon detection of a condition associated with a failure (e.g., an actual or predicted failure) of a failure domain, the associated failure domain-specific cryptographic key may be deleted to preclude further access to data in the failed failure domain. Deletion of the failure domain-specific cryptographic key may be before or after data in the failed failure domain is rebuilt in another portion of a storage drive that is functional.

Secondary key allocation to storage drive failure domains

Optimization of an aerial density capability (ADC) leveraging different qualities of media surfaces to which sub-portions of an encoded data portion are written. That is, data may be encoded to generate an encoded data portion according to a coding scheme. In turn, the encoded data portion may be divided into a plurality of sub-portions, each of which may be written to different media surfaces in a storage drive. The sub-portions may be read from the different media surfaces and combined to generate a recreated encoded data portion that is decoded using the coding scheme. As the encoded data portion is divided into sub-portions, the combined sub-portions may provide different error rates or signal-to-noise ratios that may allow for lower quality sub-portions to be assisted during the decoding process by higher quality sub-portions.

Increased aerial density capability in storage drives using encoded data portions written to media surfaces with different aerial density capabilities

A method includes receiving, by a data storage device, a read command. The method further includes reading a first set of outer code stored to a magnetic recording medium of the data storage device and storing the first set of outer code to memory. The method further includes receiving a write command to write data to the magnetic recording medium and writing a second set of outer code to the magnetic recording medium in connection with the write command.

Outer codes for data storage devices

A data storage device includes at least one data storage medium. The data storage device also includes a workload rating associated with data access operations carried out on the at least one data storage medium. The data storage device further includes a controller configured to enable performance of the data access operations, and change a rate of consumption of the workload rating by internal device management operations carried out in the data storage device in response to a change in a workload consumed by host commands serviced by the data storage device.

Workload amplification metering and management

A method includes calculating, by a data storage device processor, at least one access trajectory from a first disc surface location to at least one second disc surface location at which at least one primary data access operation is to be carried out. The method also includes determining, by the data storage device controller, whether an opportunity to commence at least one secondary data access operation exists along or proximate to the at least one access trajectory from the first disc surface location to the at least one second disc surface location.

Opportunistic command scheduling

A data storage device includes at least one data storage disc having at least one data storage surface, and at least one read head configured to communicate with the at least one data storage surface. The data storage device also includes a controller communicatively coupled to the at least one read head. The controller is configured to determine a fly height for the at least one read head over the at least one data storage surface as a function of a read workload associated with the at least one data storage surface or as a function of an ability to satisfy a read request to the at least one data storage surface on a first read attempt.

Adaptive read clearance for improving reader reliability

Method and apparatus for managing data in a cloud computing environment. In accordance with some embodiments, data updates are received to a multi-tier memory structure across a cloud network and stored as working data in an upper rewritable non-volatile memory tier of the memory structure. The working data are periodically logged to a lower non-volatile memory tier in the memory structure while a current version of the working data remain in the upper memory tier. The upper and lower memory tiers each are formed of rewritable memory cells having different constructions and storage attributes.

Data update management in a cloud computing environment

A method includes determining at least one of an areal density margin or a reliability margin for a combination of a head and a data storage surface in a data storage drive. The method also includes employing the determined at least one of the AD margin or the reliability margin to adjust an on-cylinder limit value associated with the combination of the head and the data storage surface.

Vibration-induced on-cylinder limit adjustment

Systems and methods are disclosed for employing a media read cache in a storage device. In certain embodiments, an, an apparatus may comprise a data storage drive including a volatile read cache, and a disc memory including a primary data storage region of the storage device configured for long-term storage of data via persistent logical block address to physical block address mapping, and a media read cache region configured to store a copy of data from the volatile read cache. The data storage drive may be configured to perform a read operation including: retrieve read data from the volatile read cache based on determining that the read data is available in the volatile read cache, and retrieve the read data from the media read cache based on determining that the read data is not available in the volatile read cache and is available in the media read cache.

Media read cache

In accordance with one implementation, a method for mitigating cache transfer time entails reading data into memory from at least two consecutive elliptical data tracks in a main store region of data storage and writing the data read from the at least two consecutive elliptical data tracks to a spiral data track within a cache storage region.

Cache transfer time mitigation

A data storage device includes at least one data storage medium having a plurality of tracks. The data storage device also includes at least one actuator that supports at least one head that is configured to interact with different tracks of the plurality of tracks on the at least one data storage medium to service commands from a host. The data storage device further includes a seek control circuit communicatively coupled to the at least one actuator. The seek control circuit is configured to store the commands from the host in at least one queue for execution by the at least one actuator. The seek control module is also configured to adjust power provided to the at least one actuator for seek operations to the different tracks of the plurality of tracks based on command age-related measurements of the commands from the host.

Power latency control in data storage devices

A method includes writing first data on a first track of a data storage surface, and storing information for the first data in a memory other than the data storage surface. The method also includes performing a write operation on a second track of the data storage surface after the data is written on the first track. The second track is adjacent to the first track. The method further includes identifying potentially-overwritten sectors of the first track as a result of the performance of the write operation on the second track, and performing a first read operation on the identified potentially-overwritten sectors of the first track after completion of the write operation on the second track. Second data associated with the identified potentially-overwritten sectors is then stored in a solid-state memory, and mirrored to media.

Managing data associated with overwritten portions of previously-written tracks

An application programming interface (API) that enables installation of an application as one or more key-value objects on a data storage drive such as a hard disk drive, a solid state drive or a hybrid drive. The API also enables execution of the application within a controlled environment of the data storage drive.

Active drive API

Growing community of inventors

Shakopee, MN, United States of America

Mark A Gaertner