公开(公告)号：US11687564B2

公开(公告)日：2023-06-27

申请号：US17184378

申请日：2021-02-24

Applicant: Delphix Corp.

Inventor： Nathan C. Burnett ,  John Joseph Gallagher ,  Ilker Taskaya

IPC: G06F16/27 ,  G06F21/62 ,  G06F16/23

CPC classification number: G06F16/273 ,  G06F16/2358 ,  G06F16/2379 ,  G06F21/6227

Abstract: A system performs masking of data stored in a database. The system receives change logs from a source database and masks the change logs to generate masked change logs. The system stores the masked change logs in a pre-buffer. If the system determines that the set of masked change logs stored in the pre-buffer corresponds to a complete transaction, the system determines whether any conflicts exist between masked change logs stored in the pre-buffer and masked change logs stored in a main buffer. If the system identifies conflicts, the system applies the masked change logs stored in the main buffer to a masked replica database. This causes the system to move masked change logs corresponding to a complete transaction from the pre-buffer to the main buffer.

公开(公告)号：US20220269694A1

公开(公告)日：2022-08-25

申请号：US17184378

申请日：2021-02-24

Applicant: Delphix Corp.

Inventor： Nathan C. Burnett ,  John Joseph Gallagher ,  Ilker Taskaya

IPC: G06F16/27 ,  G06F16/23 ,  G06F21/62

Abstract: A system performs masking of data stored in a database. The system receives change logs from a source database and masks the change logs to generate masked change logs. The system stores the masked change logs in a pre-buffer. If the system determines that the set of masked change logs stored in the pre-buffer corresponds to a complete transaction, the system determines whether any conflicts exist between masked change logs stored in the pre-buffer and masked change logs stored in a main buffer. If the system identifies conflicts, the system applies the masked change logs stored in the main buffer to a masked replica database. This causes the system to move masked change logs corresponding to a complete transaction from the pre-buffer to the main buffer.

公开(公告)号：US11157651B2

公开(公告)日：2021-10-26

申请号：US16205149

申请日：2018-11-29

Applicant: Delphix Corp.

Inventor： Nathan C. Burnett ,  Nathanael M. Van Vorst ,  Michelle Young Suh ,  Theodore P. Kyriakakis ,  Rachael M. Naphtal ,  Benjamin S. Page

IPC: G06F21/62 ,  G06F16/178

Abstract: A data processing system maintaining a plurality of masking engines is configured to synchronize masking jobs between different masking engines, in order to ensure consistent outputs between the different engines for the same job. Upon identifying a masking job object maintained by a first masking engine to be exported, dependencies of the job object are traversed to identify all objects depended on by the job object, which are used to form an export payload. At least object of the payload is a reference object that references other objects maintained by the first masking engine. When importing the export payload onto a second masking engine, the export payload is analyzed to identify revision information of the referenced object. The identified revision information is compared with revision information of a corresponding object maintained by the second masking engine, and the referenced objects is imported based upon a result of the comparison.

公开(公告)号：US10372329B1

公开(公告)日：2019-08-06

申请号：US15346433

申请日：2016-11-08

Applicant: Delphix Corporation

Inventor： Matthew Allan Ahrens ,  Alexander Warner Reece ,  George Raymond Wilson

IPC: G06F3/06 ,  G06F12/1009

Abstract: Storage systems store data in a storage pool comprising storage devices or virtual devices. The storage pool may be allocated for a particular purpose. If a virtual device within the storage pool needs to be repurposed, the virtual device is removed from the storage pool. Data is moved from the removed virtual device to one or more target virtual devices. Segments of the source virtual device being removed are copied to target virtual devices. Mapping tables associating source segments with target segments are stored. If the storage system receives a request to access data stored on a virtual device that is removed, the storage system processes the mapping tables to determine where the data is stored.

公开(公告)号：US09396074B2

公开(公告)日：2016-07-19

申请号：US14324485

申请日：2014-07-07

Applicant: Delphix Corp.

Inventor： Michael James Stewart ,  Hubert Ken Sun

IPC: G06F17/30 ,  G06F11/14

CPC classification number: G06F11/1464 ,  G06F17/30309 ,  G06F17/30566

Abstract: A database storage system allows users to modify the state of a virtual database. The database storage system provides a respective virtual database (VDB) at a respective destination, the respective VDB having a first timeflow stored in a respective container. A user can send a request to rewind a VDB. The request identifies timeflow of the VDB and a state of the VDB associated with a timeflow. The database storage system modifies the virtual database to refer to database blocks associated with a snapshot of the VDB associated with the identified timeflow. The database storage system maintains a new timeflow for the modified VDB. The database storage system also allows the virtual database to be refreshed to a state of a source database. The source database can be a database stored in an external system or a virtual database stored within the database storage system.

Abstract translation: 数据库存储系统允许用户修改虚拟数据库的状态。 数据库存储系统在相应目的地提供相应的虚拟数据库（VDB），相应的VDB具有存储在相应容器中的第一时间流。 用户可以发送请求以倒带VDB。 该请求标识VDB的时间流和与时间流相关联的VDB的状态。 数据库存储系统修改虚拟数据库以引用与与识别的时间流相关联的VDB的快照相关联的数据库块。 数据库存储系统为修改的VDB维护新的时间流。 数据库存储系统还允许将虚拟数据库刷新到源数据库的状态。 源数据库可以是存储在数据库存储系统中的外部系统或虚拟数据库中的数据库。

公开(公告)号：US09037612B2

公开(公告)日：2015-05-19

申请号：US14058873

申请日：2013-10-21

Applicant: Delphix Corp.

Inventor： Charlie Li Zha ,  Jedidiah Yueh ,  Alok Kumar Srivastava

IPC: G06F17/30

CPC classification number: G06F17/30088 ,  G06F17/30144 ,  G06F17/30174 ,  G06F17/30566 ,  G06F17/30592

Abstract: Information from multiple databases is retrieved and stored on a database storage system. Multiple point-in-time copies are obtained for each database. A point-in-time copy retrieves data changed in the database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system. Each file in the set of files created for a VDB is linked to the database blocks on the database storage system associated with a point-in-time copy of the source database. The set of files associated with the VDB are mounted on a database server allowing the database server to read from and write to the set of files. Workflows based on VDBs allow various usage scenarios based on databases to be implemented efficiently, for example, testing and development, backup and recovery, and data warehouse building.

Abstract translation: 来自多个数据库的信息被检索并存储在数据库存储系统上。 为每个数据库获取多个时间点副本。 时间点副本从检索先前的时间点副本后检索数据库中已更改的数据。 通过在数据存储系统中创建一组文件来创建虚拟数据库（VDB）。 为VDB创建的文件集中的每个文件都链接到与源数据库的时间点副本相关联的数据库存储系统上的数据库块。 与VDB相关联的一组文件安装在数据库服务器上，允许数据库服务器从该文件集中读取和写入。 基于VDB的工作流程允许基于数据库的各种使用场景被有效地实现，例如测试和开发，备份和恢复以及数据仓库构建。

公开(公告)号：US08566361B2

公开(公告)日：2013-10-22

申请号：US13316263

申请日：2011-12-09

Applicant: Charles Li Zha ,  Jedidiah Yueh ,  Alok Kumar Srivastava

Inventor： Charles Li Zha ,  Jedidiah Yueh ,  Alok Kumar Srivastava

IPC: G06F17/30

CPC classification number: G06F17/30088 ,  G06F17/30144 ,  G06F17/30174 ,  G06F17/30566 ,  G06F17/30592

Abstract: Information from multiple databases is retrieved and stored on a database storage system. Multiple point-in-time copies are obtained for each database. A point-in-time copy retrieves data changed in the database since the retrieval of a previous point-in-time copy. A virtual database (VDB) is created by creating a set of files in the data storage system. Each file in the set of files created for a VDB is linked to the database blocks on the database storage system associated with a point-in-time copy of the source database. The set of files associated with the VDB are mounted on a database server allowing the database server to read from and write to the set of files. Workflows based on VDBs allow various usage scenarios based on databases to be implemented efficiently, for example, testing and development, backup and recovery, and data warehouse building.