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    EFFICIENT DISASTER ROLLBACK ACROSS HETEROGENEOUS STORAGE SYSTEMS
    1.
    发明申请
    EFFICIENT DISASTER ROLLBACK ACROSS HETEROGENEOUS STORAGE SYSTEMS 审中-公开

    公开(公告)号：US20190114230A1

    公开(公告)日：2019-04-18

    申请号：US16214920

    申请日：2018-12-10

    Applicant: Nutanix, Inc.

    Inventor： Parthasarathy RAMACHANDRAN ,  Manosiz BHATTACHARYYA ,  Karthik CHANDRASEKARAN

    IPC: G06F11/14 ,  G06F3/06

    Abstract: Systems for storage system rollover and rollback. A data mover agent is installed on a source storage system to capture disaster recovery data and send to a target system. Upon receiving a rollover event signal, a virtualized controller creates one or more replica user virtual machines running on the target system that serve to replicate functions of the user virtual machines from the source storage system. The virtualized controller on the target system converts the target disaster recovery data from a first format to a second format to facilitate use of the target disaster recovery data by the replica user virtual machines. Rollback is initiated when the target system receives a rollback event signal. Differences in the data that have occurred between the rollover event and the rollback signal are calculated and sent to the rollback system. The calculated differences are applied to a registered snapshot on the rollback system.

    SPOT COALESCING OF DISTRIBUTED DATA CONCURRENT WITH STORAGE I/O OPERATIONS
    4.
    发明申请
    SPOT COALESCING OF DISTRIBUTED DATA CONCURRENT WITH STORAGE I/O OPERATIONS 审中-公开

    公开(公告)号：US20200034049A1

    公开(公告)日：2020-01-30

    申请号：US15019319

    申请日：2016-02-09

    Applicant: Nutanix, Inc.

    Inventor： Manosiz BHATTACHARYYA ,  Bharath BEEDU ,  Parthasarathy RAMACHANDRAN

    IPC: G06F3/06

    Abstract: Systems, methods, and computer program products for distributed data storage. A spot defragmentation method commences upon receiving an incoming storage I/O command to access a subject logical object that is composed of subject logical data blocks. The method continues by retrieving a block map that characterizes spatial relationships between the subject logical data blocks and instances of respective subject physical data blocks that store the subject logical object on a storage device. During processing of the incoming storage I/O command, the method determines occurrences of, and locations of one or more fragmented physical data blocks. A defragmentation operation is initiated to coalesce the fragmented physical data blocks to another location. The defragmentation operation is initiated before completing the storage I/O command. In some instances, defragmentation operations are performed over a snapshot file such that upon completing the defragmentation operations and/or spot coalesce operations, the snapshot file can be deleted.

    DYNAMIC DATA COMPRESSION
    5.
    发明申请
    DYNAMIC DATA COMPRESSION 审中-公开

    公开(公告)号：US20190171382A1

    公开(公告)日：2019-06-06

    申请号：US16255242

    申请日：2019-01-23

    Applicant: Nutanix, Inc.

    Inventor： ChernYih CHEAH ,  Kiran TATIPARTHI ,  Manosiz BHATTACHARYYA ,  Varun Kumar ARORA

    IPC: G06F3/06 ,  G06F13/20

    Abstract: Techniques for performing compression operations on persistently-stored data blocks during read/write commands. A method embodiment performs in-line data compression operations over data blocks referenced by a caller. The in-line data compression operations are performed during execution of a storage input-output (I/O) command, between the event of receipt of the storage I/O command and the event of returning status of the storage I/O command. The storage I/O operation is associated with at least one data group comprising one or more data blocks that are identified by the caller. Upon receipt of the storage I/O command, one or more compression rules are applied to the data blocks to determine one or more compression parameters, which compression parameters are used to form specific compression operations that are performed over at least a portion of the data group. The status pertaining to the execution of the storage I/O operation is returned to the caller.

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