FORMING LIGHTWEIGHT SNAPSHOTS FOR LOSSLESS DATA RESTORE OPERATIONS

    公开(公告)号:US20190354289A1

    公开(公告)日:2019-11-21

    申请号:US16200502

    申请日:2018-11-26

    Applicant: Nutanix, Inc.

    Abstract: Systems for high performance restore of data to storage devices. A method embodiment commences upon identifying a plurality of virtual disks to be grouped together into one or more consistency sets. Storage I/O commands for the plurality of virtual disks of the consistency sets are captured into multiple levels of backup data. On a time schedule, multiple levels of backup data for the virtual disks are cascaded by processing data from one or more higher granularity levels of backup data to one or more lower granularity levels of backup data. A restore operation can access the multiple levels of backup data to construct a restore set that is consistent to a designated point in time or to a designated state. Multiple staging areas can be maintained using lightweight snapshot data structures that each comprise a series of captured I/Os to be replayed over other datasets to generate a restore set.

    EFFICIENT DATA RESTORATION
    22.
    发明申请

    公开(公告)号:US20190340091A1

    公开(公告)日:2019-11-07

    申请号:US15949886

    申请日:2018-04-10

    Applicant: Nutanix, Inc.

    Abstract: A data center communicates with a cloud-based backup system. Client-server roles are established such that a client role is assigned to the data center and a server role is assigned to the cloud-based backup system. On an ongoing basis, backup operations are performed. In the event of disaster or other cause of an outage of the data center, a failover protocol might be invoked such that the cloud-based backup system takes on additional processing operations beyond the aforementioned backup operations. After remediation, the data center issues a data restoration message to the cloud-based backup system. The remediated data center initiates a failback protocol that reverses the client-server roles of the data center and the cloud-based backup system such that the server role is assigned to the data center and the client role is assigned to the cloud-based backup system. After performing system restoration operations, the roles may be reversed again.

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