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    CREATION AND RETENTION OF IMMUTABLE SNAPSHOTS TO FACILITATE RANSOMWARE PROTECTION
    71.
    发明公开
    CREATION AND RETENTION OF IMMUTABLE SNAPSHOTS TO FACILITATE RANSOMWARE PROTECTION 审中-公开

    公开(公告)号：US20240275814A1

    公开(公告)日：2024-08-15

    申请号：US18168739

    申请日：2023-02-14

    Applicant: NetApp, Inc.

    Inventor： Tijin George ,  Vijay Srinath ,  Ling Zheng

    IPC: H04L9/40 ,  G06F16/11

    CPC classification number: H04L63/1466 ,  G06F16/125 ,  G06F16/128 ,  H04L63/1416 ,  H04L63/1425

    Abstract: Systems and methods for creation and retention of immutable snapshots to facilitate ransomware protection are provided. According to one embodiment, multiple use cases for retention of snapshots are supported, including (i) maintaining a locked snapshot on a source volume of a first storage system on which it was originally created for at least an associated immutable retention time; (ii) replicating the locked snapshot to a destination volume of a second storage system and also maintaining the replica of the locked snapshot on the destination volume for at least the associated immutable retention time; and (iii) maintaining an unlocked snapshot on the source volume, replicating the unlocked snapshot to the destination volume, locking the replicated snapshot on the destination volume when it has an associated non-zero immutable retention time, and thereafter maintaining the replica on the destination volume in accordance with the immutable retention time.

    INCREMENTAL BACKUP TO OBJECT STORE
    73.
    发明公开
    INCREMENTAL BACKUP TO OBJECT STORE 审中-公开

    公开(公告)号：US20240118977A1

    公开(公告)日：2024-04-11

    申请号：US18541143

    申请日：2023-12-15

    Applicant: NetApp, Inc.

    Inventor： Ling Zheng ,  Atul Ramesh Pandit ,  Tijin George ,  Ravindra Ramachandraiah Kuramkote

    IPC: G06F11/14

    CPC classification number: G06F11/1451 ,  G06F11/1458

    Abstract: Techniques are provided for incremental backup to an object store. A request may be received from an application to perform a backup from a volume hosted by a node to a backup target within the object store. A set of changed files within the volume since a prior backup of the volume was performed to the backup target is identified, along with metadata associated with the set of changed files. The metadata is utilized to identify changed data blocks comprising data of the set of changed files that was modified since the prior backup. The changed data blocks are backed up to the object store.

    Immutable snapshot copies stored in write once read many (WORM) storage
    74.
    发明授权
    Immutable snapshot copies stored in write once read many (WORM) storage 有权

    公开(公告)号：US11914884B2

    公开(公告)日：2024-02-27

    申请号：US18178706

    申请日：2023-03-06

    Applicant: NetApp Inc.

    Inventor： Atul Ramesh Pandit ,  Tijin George

    IPC: G06F12/00 ,  G06F3/06 ,  G06F16/11

    CPC classification number: G06F3/065 ,  G06F3/0604 ,  G06F3/067 ,  G06F3/0647 ,  G06F16/125 ,  G06F16/128

    Abstract: Techniques are provided for storing immutable snapshot copes in write once read many (WORM) storage. A snapshot of a volume may be stored into one or more objects formatted according to an object format. An expiry time may be assigned to the snapshot and the one or more objects based upon a creation time of the snapshot and a retention time. The one or more objects may be stored within a remote object store. The one or more objects are retained in an immutable state and cannot be deleted until expiration of the expiry time. In response to identifying an existing object within the remote object store comprising shared snapshot data referenced by the snapshot, an assigned expiry time of the existing object may be modified based upon the expiry time of the snapshot to create a modified expiry time for the existing object.

    Volume group garbage collection
    75.
    发明授权
    Volume group garbage collection 有权

    公开(公告)号：US11907116B2

    公开(公告)日：2024-02-20

    申请号：US17733078

    申请日：2022-04-29

    Applicant: NetApp Inc.

    Inventor： Rakesh Bhargava M. R. ,  Murali Subramanian ,  Tijin George ,  Ching-Yuk Paul Ngan

    IPC: G06F12/02

    CPC classification number: G06F12/0253 ,  G06F2212/702 ,  G06F2212/7205

    Abstract: Techniques are provided for volume group backup, volume group restore, and volume group garbage collection for volume groups backed up to an object store. A volume group workflow is implemented to orchestrate individual consistent volume workflows that are separately and individually implemented by nodes hosting constituent volumes of a volume group. The volume group workflow and the individual consistent volume workflows are performed to back up the volume group to the object store, restore a volume group backup from the object store to a restore destination, and/or perform garbage collection on slots of objects storing data unique to a volume group backup to delete.

    ON-DEMAND SERVERLESS DISASTER RECOVERY
    77.
    发明公开
    ON-DEMAND SERVERLESS DISASTER RECOVERY 审中-公开

    公开(公告)号：US20230385166A1

    公开(公告)日：2023-11-30

    申请号：US17824120

    申请日：2022-05-25

    Applicant: NetApp Inc.

    Inventor： Dnyaneshwar Nagorao Pawar ,  Sumith Makam ,  Roopesh Chuggani ,  Tijin George

    IPC: G06F11/20 ,  G06F11/14

    CPC classification number: G06F11/2025 ,  G06F11/1469 ,  G06F2201/84

    Abstract: Techniques are provided for on-demand serverless disaster recovery. A primary node may host a primary volume. Snapshots of the primary volume may be backed up to an object store. In response to failure, a secondary node and/or an on-demand volume may be created on-demand. The secondary node may provide clients with failover access to the on-demand volume while a restore process restores a snapshot of the primary volume to the on-demand volume. In some embodiments, there was no secondary node and/or on-demand volume while the primary node was operational. This conserves computing resources that would be wasted by otherwise hosting the secondary node and/or on-demand volume while clients were able to access the primary volume through the primary node. Modifications directed to the on-demand volume are incrementally backed up to the object store for subsequently restoring the primary volume after recovery.

    DIRECTORY RESTORE FROM REMOTE OBJECT STORE
    78.
    发明公开
    DIRECTORY RESTORE FROM REMOTE OBJECT STORE 审中-公开

    公开(公告)号：US20230385153A1

    公开(公告)日：2023-11-30

    申请号：US17824131

    申请日：2022-05-25

    Applicant: NetApp Inc.

    Inventor： Tijin George ,  Avanthi Rajan ,  Sanhita Praveen Dhavale

    IPC: G06F11/14 ,  G06F16/11

    CPC classification number: G06F11/1435 ,  G06F11/1469 ,  G06F16/128 ,  G06F2201/84

    Abstract: Techniques are provided for restoring a directory from a snapshot of a volume backed up to an object store. The snapshot may be backed up from a node to the object store, such as a cloud computing environment. A user may want to restore the directory within the volume without having to restore the entire volume, which otherwise would waste computing resources, storage, network bandwidth, and time. Accordingly, the techniques provided herein are capable of restoring just the directory from the snapshot that is stored within the object store. Because snapshot data of the snapshot may be stored across multiple objects within the object store, certain objects are identified as comprising snapshot data (backup data) of the directory and content items within the directory. In this way, the snapshot data of the directory is restored from these objects to a restore directory at a restore target.

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