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    TIME-BASED VIRTUAL MACHINE REVERSION
    1.
    发明申请
    TIME-BASED VIRTUAL MACHINE REVERSION 审中-公开

    公开(公告)号：US20200034252A1

    公开(公告)日：2020-01-30

    申请号：US16590061

    申请日：2019-10-01

    Applicant: Commvault Systems, Inc.

    Inventor： Amit MITKAR ,  Andrei EROFEEV ,  Amit Bhaskar AUSARKAR ,  Ajay Venkat NAGRALE

    IPC: G06F11/14 ,  G06F11/30 ,  G06F11/32 ,  G06F3/06 ,  G06F9/455

    Abstract: Recovery points can be used for replicating a virtual machine and reverting the virtual machine to a different state. A filter driver can monitor and capture input/output commands between a virtual machine and a virtual machine disk. The captured input/output commands can be used to create a recovery point. The recovery point can be associated with a bitmap that may be used to identify data blocks that have been modified between two versions of the virtual machine. Using this bitmap, a virtual machine may be reverted or restored to a different state by replacing modified data blocks and without replacing the entire virtual machine disk.

    TIME-BASED VIRTUAL MACHINE REVERSION
    2.
    发明申请
    TIME-BASED VIRTUAL MACHINE REVERSION 有权

    公开(公告)号：US20210255937A1

    公开(公告)日：2021-08-19

    申请号：US17203579

    申请日：2021-03-16

    Applicant: Commvault Systems, Inc.

    Inventor： Amit MITKAR ,  Andrei EROFEEV ,  Amit Bhaskar AUSARKAR ,  Ajay Venkat NAGRALE

    IPC: G06F11/14 ,  G06F3/06 ,  G06F11/30 ,  G06F11/32 ,  G06F16/21 ,  G06F9/455

    Abstract: Recovery points can be used for replicating a virtual machine and reverting the virtual machine to a different state. A filter driver can monitor and capture input/output commands between a virtual machine and a virtual machine disk. The captured input/output commands can be used to create a recovery point. The recovery point can be associated with a bitmap that may be used to identify data blocks that have been modified between two versions of the virtual machine. Using this bitmap, a virtual machine may be reverted or restored to a different state by replacing modified data blocks and without replacing the entire virtual machine disk.

    BUFFERED VIRTUAL MACHINE REPLICATION
    3.
    发明申请
    BUFFERED VIRTUAL MACHINE REPLICATION 有权

    公开(公告)号：US20210117294A1

    公开(公告)日：2021-04-22

    申请号：US17112860

    申请日：2020-12-04

    Applicant: Commvault Systems, Inc.

    Inventor： Amit MITKAR ,  Andrei EROFEEV ,  Amit Bhaskar AUSARKAR ,  Ajay Venkat NAGRALE

    IPC: G06F11/14 ,  G06F3/06 ,  G06F11/30 ,  G06F11/32 ,  G06F16/21 ,  G06F9/455

    Abstract: Recovery points can be used for replicating a virtual machine and reverting the virtual machine to a different state. A filter driver can monitor and capture input/output commands between a virtual machine and a virtual machine disk. The captured input/output commands can be used to create a recovery point. The recovery point can be associated with a bitmap that may be used to identify data blocks that have been modified between two versions of the virtual machine. Using this bitmap, a virtual machine may be reverted or restored to a different state by replacing modified data blocks and without replacing the entire virtual machine disk.

    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES TO SPEED UP VIRTUAL MACHINE BACKUP OPERATIONS
    6.
    发明申请
    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES TO SPEED UP VIRTUAL MACHINE BACKUP OPERATIONS 有权

    公开(公告)号：US20230052584A1

    公开(公告)日：2023-02-16

    申请号：US17979682

    申请日：2022-11-02

    Applicant: Commvault Systems, Inc.

    Inventor： Ajay Venkat NAGRALE ,  Anita JOSEPH ,  Sasikala RAJU ,  Henry Wallace DORNEMANN

    IPC: G06F16/11 ,  G06F16/188 ,  G06F11/14 ,  G06F9/455

    Abstract: An executable utility is injected into cloud-based virtual machines (VMs) that are subject to backups by a data storage management system tasked with protecting the cloud-based VMs and their associated data. The utility is injected into a target VM which is “live” and operating. The utility analyzes the VM’s live volume to discover data extents therein, and for each extent computes a respective checksum and determines whether the extent is a “hole.” Afterwards, checksums help identify changed data in successive snapshots of the live volume, so that only changed data will be read and backed up in incremental backups. Time is saved in performing the backup operation first by pre-warming the backup’s source volume in parallel with the utility analyzing the live volume, and second by skipping read operations for extents unchanged since a preceding backup. The resulting incremental backup operation is sped up as compared to prior art approaches.

    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES FOR SPEEDING UP VIRTUAL MACHINE BACKUP OPERATIONS
    7.
    发明申请
    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES FOR SPEEDING UP VIRTUAL MACHINE BACKUP OPERATIONS 审中-公开

    公开(公告)号：US20190278662A1

    公开(公告)日：2019-09-12

    申请号：US15981739

    申请日：2018-05-16

    Applicant: Commvault Systems, Inc.

    Inventor： Ajay Venkat NAGRALE ,  Anita JOSEPH ,  Sasikala RAJU ,  Henry Wallace DORNEMANN

    IPC: G06F11/14 ,  G06F9/455 ,  G06F17/30

    Abstract: An executable utility is injected into cloud-based virtual machines (VMs) that are subject to backups by a data storage management system tasked with protecting the cloud-based VMs and their associated data. The utility is injected into a target VM which is “live” and operating. The utility analyzes the VM's live volume to discover data extents therein, and for each extent computes a respective checksum and determines whether the extent is a “hole.” Afterwards, checksums help identify changed data in successive snapshots of the live volume, so that only changed data will be read and backed up in incremental backups. Time is saved in performing the backup operation first by pre-warming the backup's source volume in parallel with the utility analyzing the live volume, and second by skipping read operations for extents unchanged since a preceding backup. The resulting incremental backup operation is sped up as compared to prior art approaches.

    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES FOR SPEEDING UP VIRTUAL MACHINE BACKUP OPERATIONS
    9.
    发明申请
    USING UTILITIES INJECTED INTO CLOUD-BASED VIRTUAL MACHINES FOR SPEEDING UP VIRTUAL MACHINE BACKUP OPERATIONS 有权

    公开(公告)号：US20210103556A1

    公开(公告)日：2021-04-08

    申请号：US17105347

    申请日：2020-11-25

    Applicant: Commvault Systems, Inc.

    Inventor： Ajay Venkat NAGRALE ,  Anita JOSEPH ,  Sasikala RAJU ,  Henry Wallace DORNEMANN

    IPC: G06F16/11 ,  G06F9/455 ,  G06F11/14 ,  G06F16/188

    Abstract: An executable utility is injected into cloud-based virtual machines (VMs) that are subject to backups by a data storage management system tasked with protecting the cloud-based VMs and their associated data. The utility is injected into a target VM which is “live” and operating. The utility analyzes the VM's live volume to discover data extents therein, and for each extent computes a respective checksum and determines whether the extent is a “hole.” Afterwards, checksums help identify changed data in successive snapshots of the live volume, so that only changed data will be read and backed up in incremental backups. Time is saved in performing the backup operation first by pre-warming the backup's source volume in parallel with the utility analyzing the live volume, and second by skipping read operations for extents unchanged since a preceding backup. The resulting incremental backup operation is sped up as compared to prior art approaches.

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