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    Wear mitigation in a data storage system through data migration
    1.
    发明授权
    Wear mitigation in a data storage system through data migration 有权

    公开(公告)号：US11023352B2

    公开(公告)日：2021-06-01

    申请号：US15875572

    申请日：2018-01-19

    Applicant: Seagate Technology LLC

    Inventor： Mark A. Gaertner ,  Anil Kashyap

    IPC: G06F3/06 ,  G06F11/34 ,  G06F11/07 ,  G06F11/00 ,  G06N7/00

    Abstract: Method and apparatus for distributing wear in a disc stack. A data transducer is used to record data to a data recording surface in the disc stack. Performance statistics are accumulated including a dwell metric value indicative of dwell time of the transducer adjacent a selected radial location and an operational life metric value indicative of accumulated elapsed operation of the transducer. Data are migrated from the selected radial location to a target location within the disc stack responsive to at least a selected one of the dwell metric value or the operational life metric value. In some cases, the dwell metric value may indicate an estimated amount of lubricant disturbance and the operational life operation may indicate operational hours of a heat assisted magnetic recording (HAMR) element. The target location may be on a different data recording surface having an associated transducer with a lower operational life metric value.

    FRAGMENTED DATA STORAGE BANDS
    3.
    发明申请
    FRAGMENTED DATA STORAGE BANDS 有权

    公开(公告)号：US20170229145A1

    公开(公告)日：2017-08-10

    申请号：US15017228

    申请日：2016-02-05

    Applicant: Seagate Technology LLC

    Inventor： Anil Kashyap ,  Brian T. Edgar

    IPC: G11B20/12 ,  G06F3/06

    CPC classification number: G11B20/1217 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/065 ,  G06F3/0676 ,  G11B2020/1238

    Abstract: 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.

    Fragmented data storage bands
    4.
    发明授权
    Fragmented data storage bands 有权

    公开(公告)号：US10347284B2

    公开(公告)日：2019-07-09

    申请号：US15685837

    申请日：2017-08-24

    Applicant: Seagate Technology LLC

    Inventor： Anil Kashyap ,  Brian T. Edgar

    IPC: G11B20/12 ,  G06F3/06

    Abstract: 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.

    Fragmented data storage bands
    5.
    发明授权
    Fragmented data storage bands 有权

    公开(公告)号：US09767843B2

    公开(公告)日：2017-09-19

    申请号：US15017228

    申请日：2016-02-05

    Applicant: Seagate Technology LLC

    Inventor： Anil Kashyap ,  Brian T. Edgar

    IPC: G06F3/06 ,  G11B20/12

    CPC classification number: G11B20/1217 ,  G06F3/0604 ,  G06F3/061 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/065 ,  G06F3/0676 ,  G11B2020/1238

    Abstract: 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.

    Managing data associated with overwritten portions of previously-written tracks
    9.
    发明授权
    Managing data associated with overwritten portions of previously-written tracks 有权

    公开(公告)号：US11164598B1

    公开(公告)日：2021-11-02

    申请号：US17218317

    申请日：2021-03-31

    Applicant: Seagate Technology LLC

    Inventor： Anil Kashyap ,  Jason Charles Jury ,  Joshua Ward Christensen ,  Brian T. Edgar ,  Mark A. Gaertner

    IPC: G11B5/09 ,  G11B5/012 ,  G11B20/10

    Abstract: 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.

    Wear Mitigation in a Data Storage System Through Data Migration
    10.
    发明申请
    Wear Mitigation in a Data Storage System Through Data Migration 审中-公开

    公开(公告)号：US20190227898A1

    公开(公告)日：2019-07-25

    申请号：US15875572

    申请日：2018-01-19

    Applicant: Seagate Technology LLC

    Inventor： Mark A. Gaertner ,  Anil Kashyap

    IPC: G06F11/34 ,  G06F3/06 ,  G06F11/00 ,  G06F11/07

    Abstract: Method and apparatus for distributing wear in a disc stack. A data transducer is used to record data to a data recording surface in the disc stack. Performance statistics are accumulated including a dwell metric value indicative of dwell time of the transducer adjacent a selected radial location and an operational life metric value indicative of accumulated elapsed operation of the transducer. Data are migrated from the selected radial location to a target location within the disc stack responsive to at least a selected one of the dwell metric value or the operational life metric value. In some cases, the dwell metric value may indicate an estimated amount of lubricant disturbance and the operational life operation may indicate operational hours of a heat assisted magnetic recording (HAMR) element. The target location may be on a different data recording surface having an associated transducer with a lower operational life metric value.

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