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    Host system directly connected to internal switching fabric of storage system
    31.
    发明授权
    Host system directly connected to internal switching fabric of storage system 有权

    公开(公告)号：US11151063B2

    公开(公告)日：2021-10-19

    申请号：US16389383

    申请日：2019-04-19

    Applicant: EMC IP Holding Company LLC

    Inventor： Ian Wigmore ,  Alesia A. Tringale ,  Jason J. Duquette

    IPC: G06F13/16 ,  G06F13/40

    Abstract: A host system is connected to the internal fabric of a storage system without an intervening external network or director or other component of the storage system controlling the host system's access to the internal fabric. The host system may exchange I/O communications with physical storage devices and/or global memory over an I/O path that does not include any directors, for example, over the internal fabric to which the host system is directly attached. In embodiments in which at least a portion of the global memory is considered part of a director, the host system may be configured to communicate with such global memory over the internal fabric and without use of director compute resources.

    USING A SMART NETWORK INTERFACE CONROLLER WITH STORAGE SYSTEMS
    33.
    发明申请
    USING A SMART NETWORK INTERFACE CONROLLER WITH STORAGE SYSTEMS 有权

    公开(公告)号：US20210149567A1

    公开(公告)日：2021-05-20

    申请号：US16687791

    申请日：2019-11-19

    Applicant: EMC IP Holding Company LLC

    Inventor： Adnan Sahin ,  Douglas E. LeCrone ,  Ian Wigmore

    IPC: G06F3/06 ,  G06F11/14

    Abstract: A backup data storage system includes non-volatile memory units, a disk interface coupled to at least some of the non-volatile memory units, a connection component that facilitates exchanging data with the backup data storage system, and a smart network interface controller, coupled to the disk interface and the connection component to provide tape emulation to a host coupled to the backup data storage system. The disk interface, the connection component, and the smart network interface controller may be coupled using a PCIe bus. Tape data written to the backup storage device may be stored on the non-volatile memory units. A processor coupled to the smart network interface controller and the disk interface may receive the data from the smart network interface controller and may provide the data to the disk interface to store the data on the non-volatile memory units. The connection component may be a FICON connection component.

    HOST CACHE COHERENCY WHEN READING DATA
    34.
    发明申请
    HOST CACHE COHERENCY WHEN READING DATA 有权

    公开(公告)号：US20210034519A1

    公开(公告)日：2021-02-04

    申请号：US16530111

    申请日：2019-08-02

    Applicant: EMC IP Holding Company LLC

    Inventor： Michael J. Scharland ,  Ian Wigmore ,  Arieh Don

    IPC: G06F12/084

    Abstract: When a read request for the data portion is received from an application executing on a host, the host may determine whether the data portion is in host cache, and if so, whether the logical storage unit of the data portion is shared by another host system. If there is another host system sharing the logical storage unit, a latest version stored on the storage system may be determined and compared to the version stored in the host cache. If the version in the host cache is the same as the latest version stored on the storage system, the data portion may be retrieved from the host cache. If the version in the host cache is not the latest version stored on the storage system, the data portion may be retrieved from the storage system, and the host cache may be updated with the latest version of the data portion.

    Host mapping logical storage devices to physical storage devices
    37.
    发明授权
    Host mapping logical storage devices to physical storage devices 有权

    公开(公告)号：US10740259B1

    公开(公告)日：2020-08-11

    申请号：US16389780

    申请日：2019-04-19

    Applicant: EMC IP Holding Company LLC

    Inventor： Ian Wigmore ,  Alesia A. Tringale ,  Jason J. Duquette

    IPC: G06F13/16 ,  G06F3/06 ,  G06F12/10 ,  G06F13/40

    Abstract: A host system may include metadata mapping logical storage devices and logical addresses therein to physical storage devices and physical addresses therein. For a read operation, the host system, if it is determined that the data is not in cache on the storage system, the host system may determine, from the device-mapping metadata, the physical storage device and physical location (e.g., address range) therein of the data to be read. The data then may be read from the physical storage device over the internal fabric of the storage system without use of a director. Data may be read from the physical storage device to the host system using RDMA communications that do not involve use of any CPU resources on the host system or the storage system.

    System and method for intelligent data movements between non-deduplicated and deduplicated tiers in a primary storage array
    39.
    发明授权
    System and method for intelligent data movements between non-deduplicated and deduplicated tiers in a primary storage array 有权

    公开(公告)号：US10678431B1

    公开(公告)日：2020-06-09

    申请号：US15280763

    申请日：2016-09-29

    Applicant: EMC IP Holding Company LLC

    Inventor： Stephen Smaldone ,  Ian Wigmore ,  Arieh Don

    IPC: G06F3/06 ,  G06F16/174

    Abstract: Embodiments provide for a primary storage array having multiple storage tiers. The multiple storage tiers include one or more performance tiers and at least one deduplicated storage tier storing deduplicated data. One embodiment provides for a data storage system including a first storage tier including a first set of storage devices; a second storage tier including a second set of storage devices, the second storage tier including deduplicated data; and a quality of service (QoS) manager to manage data migration between the first storage tier and the second storage tier, the QoS manager to maintain deduplication statistics for the deduplicated data, wherein the QoS manager, based on the deduplication statistics, is to partially migrate a data extent between the first storage tier and the second storage tier, the data extent including data stored at a range of storage addresses.

    Using replication facility to provide secure host network connectivity wherein a first logical device is used exclusively for sending messages from host to second host
    40.
    发明授权
    Using replication facility to provide secure host network connectivity wherein a first logical device is used exclusively for sending messages from host to second host 有权

    公开(公告)号：US10552060B1

    公开(公告)日：2020-02-04

    申请号：US15497718

    申请日：2017-04-26

    Applicant: EMC IP Holding Company LLC

    Inventor： Arieh Don ,  Ian Wigmore ,  Steve Smaldone

    IPC: G06F3/06

    Abstract: Techniques for inter-host communication may include issuing a first message from a first host; and sending the first message from the first host to a second host. Sending the first message may include transmitting the first message indirectly to the second host over a first connection between a first data storage system and a second data storage system. The first connection may be used in connection with data replication to maintain a first device of the first data storage system and a second device of the second data storage system as synchronous mirrored copies of a first logical device. Multiple logical devices configured for synchronous replication may be used for inter-host communication. Alternatively, a single logical device configured for synchronous replication may be used for inter-host communication.

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