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    Optimized inline deduplication
    21.
    发明授权
    Optimized inline deduplication 有权

    公开(公告)号：US11636031B2

    公开(公告)日：2023-04-25

    申请号：US17360791

    申请日：2021-06-28

    Applicant: PURE STORAGE, INC.

    Inventor： John Colgrove ,  John Hayes ,  Ethan Miller ,  Feng Wang

    IPC: G06F12/10 ,  G06F12/02 ,  G06F3/06 ,  G06F12/1009 ,  G06F12/0802

    Abstract: Methods, computer systems, and computer readable medium are described. In a particular embodiment, a storage controller is configured to receive, from a host computing device, a request to perform a bulk array task and in response to receiving the request, store an indication relating old keys of a mapping table to new keys, wherein both the old keys and the new keys correspond to the request. The storage controller is also configured to convey a response indicating completing of the request without prior access of user data and update the mapping table to replace the old keys with the new keys.

    Reclaiming space occupied by duplicated data in a storage system
    22.
    再颁专利
    Reclaiming space occupied by duplicated data in a storage system 有权

    公开(公告)号：USRE49148E1

    公开(公告)日：2022-07-26

    申请号：US15885500

    申请日：2018-01-31

    Applicant: Pure Storage, Inc.

    Inventor： John Colgrove ,  John Hayes ,  Ethan Miller ,  Cary Sandvig ,  Joseph S. Hasbani ,  Feng Wang

    IPC: G06F12/02 ,  G06F3/06 ,  G06F16/174

    Abstract: A system and method for performing garbage collection. A system includes a storage medium, a first table including entries which map a virtual address to locations in the storage medium, and a second table with entries which include a reverse mapping of a physical address in a data storage medium to one or more virtual addresses. A storage controller is configured to perform garbage collection. During garbage collection, the controller is configured to identify one or more entries in the second table which correspond to a segment to be garbage collected. In response to determining the first table includes a valid mapping for a virtual address included in an entry of the one of the one or more entries, the controller is configured to copy data from a first location identified in the entry to a second location in the data storage medium, and reclaim the first storage location.

    Responding to variable response time behavior in a storage environment
    23.
    发明授权
    Responding to variable response time behavior in a storage environment 有权

    公开(公告)号：US11307772B1

    公开(公告)日：2022-04-19

    申请号：US15221686

    申请日：2016-07-28

    Applicant: Pure Storage, Inc.

    Inventor： John Colgrove ,  John Hayes ,  Bo Hong ,  Feng Wang ,  Ethan Miller ,  Craig Harmer

    IPC: G06F3/06

    Abstract: A system and method for effectively scheduling read and write operations among a plurality of solid-state storage devices. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array comprises an I/O scheduler. The storage controller is configured to receive a read request targeted to the data storage medium, and identify at least a first storage device of the plurality of storage devices which contains data targeted by the read request. In response to either detecting or predicting the first storage device will exhibit variable performance, the controller is configured to generate a reconstruct read request configured to obtain the data from one or more devices of the plurality of storage devices other than the first storage device.

    Intelligently sizing high latency I/O requests in a storage environment
    24.
    发明授权
    Intelligently sizing high latency I/O requests in a storage environment 有权

    公开(公告)号：US11275509B1

    公开(公告)日：2022-03-15

    申请号：US16266734

    申请日：2019-02-04

    Applicant: PURE STORAGE, INC.

    Inventor： John Colgrove ,  Craig Harmer ,  John Hayes ,  Bo Hong ,  Ethan Miller ,  Feng Wang

    IPC: G06F13/14 ,  G06F3/06 ,  G06F11/07 ,  G06F11/10

    Abstract: A computer system comprising: a data storage medium comprising a plurality of storage devices configured to store data; and a data storage controller coupled to the data storage medium; wherein the data storage controller is configured to: receive read and write requests targeted to the data storage medium; schedule said read and write requests for processing by said plurality of storage devices; detect a given device of the plurality of devices is exhibiting an unscheduled behavior comprising variable performance by one or more of the plurality of storage devices, wherein the variable performance comprises at least one of a relatively high response latency or relatively low throughput; and schedule one or more reactive operations in response to detecting the occurrence of the unscheduled behavior, said one or more reactive operations being configured to cause the given device to enter a known state.

    Deduplicating patterned data in a storage system
    25.
    发明授权
    Deduplicating patterned data in a storage system 有权

    公开(公告)号：US10783131B1

    公开(公告)日：2020-09-22

    申请号：US15861279

    申请日：2018-01-03

    Applicant: Pure Storage, Inc.

    Inventor： Marco Sanvido ,  Richard Hankins ,  John Hayes ,  Steve Hodgson ,  Feng Wang ,  Sergey Zhuravlev ,  Andrew Kleinerman

    IPC: G06F16/22 ,  G06F3/06

    Abstract: A system and method for efficiently storing data in a storage system. A data storage subsystem includes multiple data storage locations on multiple storage devices in addition to at least one mapping table. A data storage controller determines whether data to store in the storage subsystem has one or more patterns of data intermingled with non-pattern data within an allocated block. Rather than store the one or more pattern on the storage devices, the controller stores information in a header on the storage devices. The information includes at least an offset for the first instance of a pattern, a pattern length, and an identification of the pattern. The data may be reconstructed for a corresponding read request from the information stored in the header.

    Generating and optimizing summary index levels in a deduplication storage system
    26.
    发明授权
    Generating and optimizing summary index levels in a deduplication storage system 有权

    公开(公告)号：US10452297B1

    公开(公告)日：2019-10-22

    申请号：US15339684

    申请日：2016-10-31

    Applicant: Pure Storage, Inc.

    Inventor： Ronald Karr ,  Ethan L. Miller ,  Cary A. Sandvig ,  Feng Wang ,  Wei Zhang

    IPC: G06F3/06

    Abstract: The method and system generates a first deduplication map (DDM) level including first data and a second DDM level including second data. The method or apparatus also generates a first index summary (IS) level corresponding to the first DDM level and a second IS level corresponding to the second DDM level. The method or apparatus merges the first data of the first DDM level and the second data of the second DDM level to generate a third DDM level comprising third data. The method or apparatus in response to generating the third DDM level, generates a third IS level to accelerate lookup within the third DDM level.

    Reducing a number of storage devices in a storage system that are exhibiting variable I/O response times
    27.
    发明授权
    Reducing a number of storage devices in a storage system that are exhibiting variable I/O response times 有权

    公开(公告)号：US10156998B1

    公开(公告)日：2018-12-18

    申请号：US15418035

    申请日：2017-01-27

    Applicant: Pure Storage, Inc.

    Inventor： John Colgrove ,  John Hayes ,  Bo Hong ,  Feng Wang ,  Ethan Miller ,  Craig Harmer

    IPC: G06F3/06

    Abstract: A system and method for effectively scheduling read and write operations among a plurality of solid-state storage devices. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array comprises an I/O scheduler. The characteristics of corresponding storage devices are used to schedule I/O requests to the storage devices in order to maintain relatively consistent response times at predicted times. Should a device exhibit an unscheduled behavior which may be indicative of the device being in an unknown state, the scheduler may schedule one or more reactive operations on the device configured to cause the device to enter a known state.

    Adjusting a number of storage devices in a storage system that may be utilized to simultaneously service high latency operations
    28.
    发明授权
    Adjusting a number of storage devices in a storage system that may be utilized to simultaneously service high latency operations 有权

    公开(公告)号：US10126982B1

    公开(公告)日：2018-11-13

    申请号：US15418944

    申请日：2017-01-30

    Applicant: Pure Storage, Inc.

    Inventor： John Colgrove ,  John Hayes ,  Bo Hong ,  Feng Wang ,  Ethan Miller ,  Craig Harmer

    IPC: G06F3/06

    Abstract: A system and method for effectively scheduling read and write operations among a plurality of solid-state storage devices. A computer system comprises client computers and data storage arrays coupled to one another via a network. A data storage array utilizes solid-state drives and Flash memory cells for data storage. A storage controller within a data storage array comprises an I/O scheduler. The characteristics of corresponding storage devices are used to schedule I/O requests to the storage devices in order to maintain relatively consistent response times at predicted times. In order to reduce a likelihood of unscheduled behaviors of the storage devices, the storage controller is configured to schedule proactive operations on the storage devices that will reduce a number of occurrences of unscheduled behaviors.

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