公开(公告)号：US20230244613A1

公开(公告)日：2023-08-03

申请号：US17587285

申请日：2022-01-28

Applicant: Seagate Technology LLC

Inventor： Marc Timothy JONES ,  Jason Wayne KINSEY ,  Benjamin James SCOTT ,  Robert William DIXON

IPC: G06F13/16 ,  G06F13/28 ,  G06F13/42 ,  G06F13/40 ,  G06F12/02

CPC classification number: G06F13/1668 ,  G06F13/28 ,  G06F13/4221 ,  G06F13/4022 ,  G06F12/0253

Abstract: The technology disclosed herein pertains to a system and method for scaling storage using peer-to-peer NVMe communication, the method including selecting one of a plurality of NVMe devices as principal device to control communication with a host via a PCI switch, designating remainder of the plurality of NVMe devices as subordinate devices, and controlling the communication between the host and the subordinate devices using a PCI P2P DMA between the principal device and the subordinate devices.

公开(公告)号：US11710506B1

公开(公告)日：2023-07-25

申请号：US17656674

申请日：2022-03-28

Applicant: Seagate Technology LLC

Inventor： Chubing Peng ,  Tae-Woo Lee ,  Li Wan

IPC: G11B13/08 ,  G11B5/00

CPC classification number: G11B13/08 ,  G11B2005/0021

Abstract: A heat-assisted magnetic recording head includes a near-field transducer including a plasmonic disk and a multilayer near-field emitter. The multilayer near-field emitter is configured to produce a hot spot on a proximal magnetic disk. The multilayer near-field emitter is disposed in a down-track direction relative to and coupled to the plasmonic disk.

公开(公告)号：US11693596B2

公开(公告)日：2023-07-04

申请号：US17389856

申请日：2021-07-30

Applicant: Seagate Technology LLC

Inventor： Jeffrey J. Pream

IPC: G06F3/06

CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/0679

Abstract: Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). A data storage device includes a main non-volatile memory (NVM) and a command queue that lists pending data transfer commands to transfer data between the NVM and a local memory. A collision manager predicts future collisions among the pending data transfer commands, such as but not limited to commands involving pending host commands from a host. A storage manager enacts a change in a storage policy to reduce a future rate of the predicted future collisions. The change in storage policy may involve duplication of write data so that the write data are written to multiple locations within the NVM. The change in storage policy may further involve a pre-emptive garbage collection operation upon an existing location to distribute current version data blocks to multiple locations within the NVM.

公开(公告)号：US20230205686A1

公开(公告)日：2023-06-29

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: G06F12/02 ,  G06F3/06

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：US11686705B2

公开(公告)日：2023-06-27

申请号：US16870580

申请日：2020-05-08

Applicant: Seagate Technology LLC

Inventor： Gemma Mendonsa ,  Tim Rausch ,  Riyan Alex Mendonsa

IPC: G01N27/447 ,  C12N15/10

CPC classification number: G01N27/44791 ,  C12N15/101 ,  G01N27/4473

Abstract: Systems and methods for identifying DNA strand size and purifying the DNA based on strand size using electrophoresis. The methods include moving, via voltage, a plurality of DNA strands through a separation gel from an inlet of a capillary or passage to either a first outlet or a second outlet dependent on the DNA strand length. In some implementations, the system is a capillary electrophoresis system. In other implementations, the system is a microfluidic lab-on-a-chip.

公开(公告)号：US20230194991A1

公开(公告)日：2023-06-22

申请号：US18062225

申请日：2022-12-06

Applicant: Seagate Technology LLC

Inventor： Thomas Chang ,  Kim Yang Lee

IPC: G03F7/20

CPC classification number: G03F7/2016 ,  B82Y40/00

Abstract: A method of manufacturing a synthetic nanopore device for DNA sequencing disclosed herein includes providing a base template, forming a guiding layer on top of the base template, and forming a photoresist layer on top of the guiding layer. The photoresist layer is patterned, and the guiding layer is etched for form a guiding pattern. The photoresist layer is removed to form a guiding template and a self-assembled monolayer is deposited on at least a portion of the guiding template to form a patterned template. The patterned template is exposed to one or more etch processes to form a nanoimprint lithography template. A membrane is imprinted with the nanoimprint lithography template to form an array of nanopores in the membrane.

公开(公告)号：US11670337B1

公开(公告)日：2023-06-06

申请号：US17540566

申请日：2021-12-02

Applicant: Seagate Technology LLC

Inventor： Steven Douglas Granz ,  Ian James Gilbert

IPC: G11B20/12 ,  G11B21/08

CPC classification number: G11B21/08

Abstract: A data storage medium includes a substrate, and a plurality of spaced-apart discrete data storage tracks supported by the substrate. The data storage medium also includes magnetic flux sinking material between the discrete data storage tracks and over the substrate. As an alternative to the magnetic flux sinking material, plasmonic material may be included between the discrete data storage tracks and over the substrate.

公开(公告)号：US11670336B2

公开(公告)日：2023-06-06

申请号：US17065991

申请日：2020-10-08

Applicant: Seagate Technology LLC

Inventor： Aravind Pitty ,  Xiong Liu

IPC: G11B19/20 ,  H02K7/09 ,  F16C32/04

CPC classification number: G11B19/2009 ,  F16C32/0431 ,  H02K7/09 ,  F16C2370/12 ,  F16C2380/00

Abstract: A hard disk drive includes a base deck that is coupled to a cover, a motor assembly that is coupled to the base deck, and magnetic recording media that is coupled to the motor assembly. The motor assembly includes a magnetic bearing with a horizontal magnetic bearing component and a vertical magnetic bearing component.

公开(公告)号：US11661788B2

公开(公告)日：2023-05-30

申请号：US17583550

申请日：2022-01-25

Applicant: Seagate Technology LLC

Inventor： Weibin Chen ,  Nan Zhou ,  Ruoxi Yang ,  Michael Allen Siegler

IPC: G11B5/00 ,  G11B11/105 ,  E06B1/62 ,  C08L95/00 ,  E04B1/66 ,  E04F19/04

CPC classification number: E06B1/62 ,  C08L95/005 ,  E04B1/665 ,  E04F19/045 ,  E04F19/0459 ,  E06B2001/628

Abstract: A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.

公开(公告)号：US20230161483A1

公开(公告)日：2023-05-25

申请号：US17991049

申请日：2022-11-21

Applicant: Seagate Technology LLC

Inventor： Jason Wayne Kinsey ,  Hemant Vitthalrao Mane ,  Niranjan Anant Pol ,  Marc Timothy Jones ,  Jason Matthew Feist

IPC: G06F3/06 ,  G06F11/10

CPC classification number: G06F3/0619 ,  G06F3/0613 ,  G06F3/0635 ,  G06F3/067 ,  G06F11/1076

Abstract: A data storage system employing distributed memories can have at least one host connected to a plurality of data storage devices via a network controller. One or more performance bottlenecks through the network controller may be identified with a performance module. A peer group consisting of at least two of the plurality of data storage devices is created with the performance module in response to the identified performance bottleneck so that a task can be assigned by the performance module to the peer group. The task may be chosen to mitigate the performance bottleneck by avoiding involvement of the network controller in the task.