公开(公告)号：US11900965B2

公开(公告)日：2024-02-13

申请号：US17670627

申请日：2022-02-14

Applicant: Seagate Technology LLC

Inventor： Xiong Liu ,  Choon Kiat Lim ,  June Christian Ang ,  Yichao Ma

IPC: G11B21/24

CPC classification number: G11B21/24

Abstract: A data storage device includes a disc, an actuator arm assembly, a servo clock, and a feedback and control system. The disc includes a top and bottom surfaces and a servo wedge. The servo wedge includes a top surface boundary and a bottom surface boundary. The actuator arm assembly supports a head pair configured for interaction with the top and bottom surfaces. The servo clock is configured to determine a top time at which the head pair encounters the top surface boundary and a bottom time at which the head pair encounters the bottom surface boundary during a disc read/write interaction. The feedback and control system is configured to determine an operation time difference; compare the operation time difference to a certification time difference correlating to a target vertical position of the actuator arm assembly relative to the disc; and move the actuator arm assembly to the target vertical position.

公开(公告)号：US11899590B2

公开(公告)日：2024-02-13

申请号：US17844141

申请日：2022-06-20

Applicant: Seagate Technology LLC

Inventor： Jon D. Trantham ,  Praveen Viraraghavan ,  John W. Dykes ,  Ian J. Gilbert ,  Sangita Shreedharan Kalarickal ,  Matthew J. Totin ,  Mohamad El-Batal ,  Darshana H. Mehta

IPC: G06F12/08 ,  G06F12/0891 ,  G06F12/0895 ,  G06F12/1027

CPC classification number: G06F12/0891 ,  G06F12/0895 ,  G06F12/1027 ,  G06F2212/60

Abstract: A data storage system can employ a read destructive memory configured to fill a first cache with a first data set from a data repository prior to populating a second cache with a second data set describing the first data set with the first and second cache each having non-volatile ferroelectric memory cells. An entirety of the first cache may be read in response to a cache hit in the second cache with the cache hit responsive to a data read command from a host and with the first cache being read without a refresh operation restoring the data of the first cache.

公开(公告)号：US11886732B2

公开(公告)日：2024-01-30

申请号：US15420785

申请日：2017-01-31

Applicant: Seagate Technology LLC

Inventor： Paul F. Kusbel ,  John E. Moon

IPC: G06F3/06

CPC classification number: G06F3/0649 ,  G06F3/061 ,  G06F3/0685

Abstract: A data storage server may store a data packet generated by a client in a first server memory prior to the data packet being migrated to a third server memory of the data storage server by a server controller in response to a server data migration module. The data packet may be moved to satisfy a quality of service agreement between a host and the client. The data packet can be proactively copied to a second server memory by the server controller in response to the migration of the data packet from the first to the third server memories.

公开(公告)号：US20230418959A1

公开(公告)日：2023-12-28

申请号：US17846871

申请日：2022-06-22

Applicant: Seagate Technology LLC

Inventor： Marc Timothy Jones ,  David Jerome Allen ,  Steven Williams ,  Jason Matthew Feist

IPC: G06F21/62

CPC classification number: G06F21/62 ,  G06F2221/2143

Abstract: Apparatus and method for executing hidden computational functions in a distributed data processing environment. In some embodiments, a trust boundary includes a target device such as a storage device, and a source device such as a client device in a computer network. A storage device processor executes a hidden command function (HCF) routine to accumulate HCF output data in a local cache responsive to an HCF command received from the client device over a data interface. The processor further establishes a smaller retention boundary within the trust boundary that includes the storage device and excludes the client device. The HCF output data are stored locally in a non-volatile memory (NVM) of the storage device while not transferring any portion of the HCF output data outside the retention boundary, including to the client device. The HCF routine can update a block-chain ledger or take some other form to provide data security.

公开(公告)号：US11853213B2

公开(公告)日：2023-12-26

申请号：US17730920

申请日：2022-04-27

Applicant: Seagate Technology LLC

Inventor： Jon D. Trantham ,  Praveen Viraraghavan ,  John W. Dykes ,  Ian J. Gilbert ,  Sangita Shreedharan Kalarickal ,  Matthew J. Totin ,  Mohamad El-Batal ,  Darshana H. Mehta

IPC: G06F12/0802 ,  G06F3/06

CPC classification number: G06F12/0802 ,  G06F3/0604 ,  G06F3/0655 ,  G06F3/0679 ,  G06F2212/60

Abstract: Method and apparatus for managing a front-end cache formed of ferroelectric memory element (FME) cells. Prior to storage of writeback data associated with a pending write command from a client device, an intelligent cache manager circuit forwards a first status value indicative that sufficient capacity is available in the front-end cache for the writeback data. Non-requested speculative readback data previously transferred to the front-end cache from the main NVM memory store may be jettisoned to accommodate the writeback data. A second status value may be supplied to the client device if insufficient capacity is available to store the writeback data in the front-end cache, and a different, non-FME based cache may be used in such case. Mode select inputs can be supplied by the client device specify a particular quality of service level for the front-end cache, enabling selection of suitable writeback and speculative readback data processing strategies.

公开(公告)号：US11848055B2

公开(公告)日：2023-12-19

申请号：US17406346

申请日：2021-08-19

Applicant: Seagate Technology LLC

Inventor： Ryan James Goss

IPC: G11C16/16 ,  G11C16/08 ,  G11C16/30 ,  G11C16/28

CPC classification number: G11C16/16 ,  G11C16/08 ,  G11C16/28 ,  G11C16/30

Abstract: A solid-state memory may have many non-individually erasable memory cells arranged into dies with each die having a first plane and a second plane. Receipt of a single read command from a host connected to the solid-state memory can prompt generation of a first reference voltage and a second reference voltage by the controller to produce asynchronous data retrieval. The reference voltages can be different and selected by the controller to induce a predetermined delay between retrieval of data from the first plane and retrieval of data from the second plane from the single read command. Passage of each reference voltage concurrently to a common single data address of the first plane and the second plane may produce asynchronous retrieval of data from the respective first plane and second plane.

公开(公告)号：US11848036B1

公开(公告)日：2023-12-19

申请号：US17729719

申请日：2022-04-26

Applicant: Seagate Technology LLC

Inventor： Reyad Mehfuz ,  Niall Donlon ,  Aidan Dominic Goggin ,  Prim Gangmei

IPC: G11B5/09 ,  G11B5/48 ,  G11B5/60 ,  G11B5/00

CPC classification number: G11B5/4866 ,  G11B5/6088 ,  G11B2005/0021

Abstract: An apparatus includes a substrate. A laser is deposited above the substrate. The laser includes one or more non-self-supporting layers of crystalline material. The laser has a length along a light path in a range of about 40 um to about 350 um. An optical input coupler is configured to receive light from the laser. A waveguide is deposited proximate the optical input coupler. The waveguide is configured to communicate light from the laser via the optical input coupler to a near-field transducer that directs energy resulting from plasmonic excitation to a recording medium.

公开(公告)号：US11844186B2

公开(公告)日：2023-12-12

申请号：US17894323

申请日：2022-08-24

Applicant: Seagate Technology LLC

Inventor： Paul McParland ,  Bruno Jean Masson ,  Jeffrey Dale Fochtman

IPC: H05K7/14

CPC classification number: H05K7/1487 ,  H05K7/1489 ,  H05K7/1492

Abstract: A data storage ecosystem that includes a series of devices of increasing size, designed to look and work together as a family, with at least one of the devices being a data storage device having a first consumer-accessible connector and a second high speed connector. The data storage ecosystem also includes a rack-mounted docking unit having a third high speed interfacing connector configured to couple to the second high speed connector of the data storage device when the data storage device is inserted into the rack-mounted docking unit.

公开(公告)号：US11829288B2

公开(公告)日：2023-11-28

申请号：US17705196

申请日：2022-03-25

Applicant: Seagate Technology LLC

Inventor： Shankar Tukaram More ,  Vidyadhar Charudatt Pinglikar ,  Nikita Danilov ,  Ujjwal Lanjewar

IPC: G06F3/06 ,  G06F12/02

CPC classification number: G06F12/0238 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/0689 ,  G06F2212/1016

Abstract: A volume for object storage encompasses a single logical block address space and the first range of logical block addresses being within the single logical block address space. A first and second range of logical block addresses are initially allocated within the single logical block address space of the volume for storing respective object metadata and object data. One or both of the first and second ranges of logical block addresses are reallocated to increase storage utilized by one of the object metadata and the object data.

公开(公告)号：US11817125B1

公开(公告)日：2023-11-14

申请号：US17820544

申请日：2022-08-17

Applicant: Seagate Technology LLC

Inventor： Brett R. Herdendorf ,  Riyan Alex Mendonsa ,  Krishnan Subramanian

IPC: G11B5/48 ,  G11B5/55 ,  G11B21/08

CPC classification number: G11B21/08

Abstract: A brake crawler assembly configured for vertically moving an arm assembly along a pivot member in a multi-disk hard disk drive is provided. The brake crawler assembly includes a first clamp, including a first recess within which is disposed a first actuator and a first clamp calibration element. The first clamp calibration element includes a first clamp calibration access portion adapted to be accessible externally of the first clamp and adapted to receive a first external adjustment and a first clamp internal compression modifier adapted to modify a force exerted by the first actuator on the first recess, responsive to the received first external adjustment, wherein the first clamp is configured to selectively engage the pivot member at a position along the pivot member relative to at least one disk of the multi-disk hard disk drive based on the modified force exerted.