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    Global Pool of Garbage Collection Units (GCUs) in a Shared Non-Volatile Memory Device
    31.
    发明申请
    Global Pool of Garbage Collection Units (GCUs) in a Shared Non-Volatile Memory Device 审中-公开

    公开(公告)号：US20200004457A1

    公开(公告)日：2020-01-02

    申请号：US16021870

    申请日：2018-06-28

    Applicant: Seagate Technology LLC

    Inventor： David W. Claude ,  Steven S. Williams ,  Stacey Secatch

    IPC: G06F3/06 ,  G06F12/02

    Abstract: Apparatus and method for managing shared resources in a data storage device such as a solid-state drive (SSD). In some embodiments, a non-volatile memory (NVM) has a population of semiconductor memory dies which are divided into die sets for different users. Each die set includes user garbage collection units (GCUs) for storage of user data blocks by the associated user and overprovisioned global GCUs to store user data blocks from the users of the other die sets. When an imbalance condition exists such that the workload traffic level of a first die set exceeds a workload traffic level of a second die set, at least one host I/O command for the first die set is offloaded for servicing using a selected global GCU of the second die set. The offloaded data may be subsequently transferred to the first die set after the imbalance condition is resolved.

    Deterministic Optimization via Performance Tracking in a Data Storage System
    32.
    发明申请
    Deterministic Optimization via Performance Tracking in a Data Storage System 审中-公开

    公开(公告)号：US20200004456A1

    公开(公告)日：2020-01-02

    申请号：US16021782

    申请日：2018-06-28

    Applicant: Seagate Technology LLC

    Inventor： Steven S. Williams ,  Stacey Secatch ,  David W. Claude ,  Kyumsung Lee ,  Benjamin J. Scott

    IPC: G06F3/06

    Abstract: A semiconductor data storage memory can receive data access commands into a queue in a first time sequence that correspond with the transfer of data between a host and portions of the memory. The memory may be divided into separate portions that each have a different owner and the access commands may be issued to each of the respective separate portions. The access commands can subsequently be executed in a different, second time sequence responsive to estimated completion times for each of the access commands based on measured completion times for previously serviced, similar commands to maintain a nominally consistent quality of service level for each of the respective owners.

    Configurable Mapping System in a Non-Volatile Memory
    33.
    发明申请
    Configurable Mapping System in a Non-Volatile Memory 审中-公开

    公开(公告)号：US20200004450A1

    公开(公告)日：2020-01-02

    申请号：US16023199

    申请日：2018-06-29

    Applicant: Seagate Technology LLC

    Inventor： Stacey Secatch ,  David W. Claude ,  Steven S. Williams ,  Jeff Rogers

    IPC: G06F3/06 ,  G06F13/16 ,  G06F13/42

    Abstract: Apparatus and method for managing metadata in a data storage device, such as a solid-state drive (SSD). In some embodiments, a non-volatile memory (NVM) includes a population of semiconductor memory dies. The dies are connected a number of parallel channels such that less than all of the semiconductor dies are connected to each channel. A controller circuit apportions the semiconductor memory dies into a plurality of die sets, with each die set configured to store user data blocks associated with a different user. The controller circuit subsequently rearranges the dies into a different arrangement of die sets so that at least one die is migrated from a first dies set to a second die set. A map manager circuit is configured to establish an array of pointers in a memory to identify contiguous portions of map metadtata that describe user data stored in the at least one migrated die.

    Optimization of reference voltages in a non-volatile memory (NVM)
    37.
    发明授权
    Optimization of reference voltages in a non-volatile memory (NVM) 有权

    公开(公告)号：US11901013B2

    公开(公告)日：2024-02-13

    申请号：US17541973

    申请日：2021-12-03

    Applicant: Seagate Technology LLC

    Inventor： Stacey Secatch ,  Jonathan Henze

    IPC: G11C16/26 ,  G11C16/10 ,  G11C16/14 ,  G11C16/30 ,  G11C29/44

    CPC classification number: G11C16/102 ,  G11C16/14 ,  G11C16/26 ,  G11C16/30 ,  G11C29/4401 ,  G11C2207/2254

    Abstract: Method and apparatus for managing data in a non-volatile memory (NVM) of a storage device, such as a solid-state drive (SSD). Data are stored to and retrieved from a group of memory cells in the NVM using a controller circuit. The data are retrieved using a first set of read voltages which are applied to the respective memory cells. The first set of read voltages are accumulated into a history distribution, which is evaluated to arrive at a second set of read voltages based upon characteristics of the history distribution. A calibration operation is performed on the memory cells using the second set of read voltages as a starting point. A final, third set of read voltages is obtained during the calibration operation to provide error rate performance at an acceptable level. The third set of read voltages are thereafter used for subsequent read operations.

    Deterministic optimization via performance tracking in a data storage system
    39.
    发明授权
    Deterministic optimization via performance tracking in a data storage system 有权

    公开(公告)号：US11150836B2

    公开(公告)日：2021-10-19

    申请号：US16021782

    申请日：2018-06-28

    Applicant: Seagate Technology LLC

    Inventor： Steven S. Williams ,  Stacey Secatch ,  David W. Claude ,  Kyumsung Lee ,  Benjamin J. Scott

    IPC: G06F3/06 ,  G06F9/38

    Abstract: A semiconductor data storage memory can receive data access commands into a queue in a first time sequence that correspond with the transfer of data between a host and portions of the memory. The memory may be divided into separate portions that each have a different owner and the access commands may be issued to each of the respective separate portions. The access commands can subsequently be executed in a different, second time sequence responsive to estimated completion times for each of the access commands based on measured completion times for previously serviced, similar commands to maintain a nominally consistent quality of service level for each of the respective owners.

    Storage compute appliance with user authentication and memory allocation capabilities
    40.
    发明授权
    Storage compute appliance with user authentication and memory allocation capabilities 有权

    公开(公告)号：US10909272B2

    公开(公告)日：2021-02-02

    申请号：US15885144

    申请日：2018-01-31

    Applicant: Seagate Technology LLC

    Inventor： Dana Lynn Simonson ,  Stacey Secatch ,  Kristofer C. Conklin ,  Robert Wayne Moss

    IPC: G06F21/78 ,  G06F21/31 ,  H04L9/32 ,  G06F3/06 ,  G06F9/50 ,  H04L9/08

    Abstract: Method and apparatus for managing data in a data storage device configured as a storage compute appliance. In some embodiments, the data storage device has a controller circuit and a non-volatile memory (NVM) with an overall data storage capacity. A processor authenticates each of a plurality of authorized users of the NVM via data exchanges between a host device and the processor without reference to an external authentication authority device. Upon authentication, each authorized user is allocated a separate portion of the overall data storage capacity of the NVM using an allocation model. The size of at least one of the separate portions is subsequently adjusted based on an access history of the NVM. The storage device may be a key-value storage device so that a separate set of key values is provided to each authorized user to identify data blocks stored to and retrieved from the NVM.

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