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    System and Method to Identify Changed Data Blocks
    1.
    发明申请
    System and Method to Identify Changed Data Blocks 审中-公开
    识别更改的数据块的系统和方法

    公开(公告)号：US20090006792A1

    公开(公告)日：2009-01-01

    申请号：US11770589

    申请日：2007-06-28

    Applicant: Michael L. Federwisch ,  Atul R. Pandit ,  Kapil Kumar

    Inventor： Michael L. Federwisch ,  Atul R. Pandit ,  Kapil Kumar

    IPC: G06F12/16

    CPC classification number: G06F16/10 ,  G06F11/1451

    Abstract: Differences between data objects stored on a mass storage device can be identified quickly and efficiently by comparing block numbers stored in data structures that describe the data objects. Bit-by-bit or byte-by-byte comparisons of the objects' actual data need only be performed if the block numbers are different. Objects that share many data blocks can be compared much faster than by a direct comparison of all the objects' data. The fast comparison techniques can be used to improve storage server mirrors and database storage operations, among other applications.

    Abstract translation: 通过比较存储在描述数据对象的数据结构中的块号，可以快速有效地识别存储在大容量存储设备上的数据对象之间的差异。 仅当块号不同时，才需要对对象的实际数据进行逐位或逐字节比较。 与所有对象的数据的直接比较，可以比较共享许多数据块的对象的速度更快。 快速比较技术可用于改进存储服务器镜像和数据库存储操作以及其他应用程序。

    HANDLING DATA EXTENT SIZE ASYMMETRY DURING LOGICAL REPLICATION IN A STORAGE SYSTEM
    2.
    发明申请
    HANDLING DATA EXTENT SIZE ASYMMETRY DURING LOGICAL REPLICATION IN A STORAGE SYSTEM 审中-公开
    在存储系统中的逻辑复制期间处理数据量大小不对称

    公开(公告)号：US20130073519A1

    公开(公告)日：2013-03-21

    申请号：US13237760

    申请日：2011-09-20

    Applicant: Blake Lewis ,  John K. Edwards ,  Vijay Deshmukh ,  Kapil Kumar ,  Rajesh Desai

    Inventor： Blake Lewis ,  John K. Edwards ,  Vijay Deshmukh ,  Kapil Kumar ,  Rajesh Desai

    IPC: G06F17/30

    CPC classification number: G06F17/30215 ,  G06F3/0608 ,  G06F3/0641 ,  G06F3/067 ,  G06F11/2094 ,  G06F11/2097

    Abstract: A technique to name data is disclosed to allow preservation of storage efficiency over a link between a source and a destination in a replication relationship as well as in storage at the destination. The technique allows the source to send named data to the destination once and refer to it by name multiple times in the future, without having to resend the data. The technique also allows the transmission of data extents to be decoupled from the logical containers that refer to the data extents. Additionally, the technique allows a replication system to accommodate different extent sizes between replication source and destination while preserving storage efficiency.

    Abstract translation: 公开了一种名称数据的技术，以允许通过复制关系中的源和目的地之间的链路以及在目的地的存储来保持存储效率。 该技术允许源将命名数据发送到目的地一次，并在将来多次引用它，而不必重新发送数据。 该技术还允许数据扩展区的传输与引用数据扩展区的逻辑容器进行解耦。 此外，该技术允许复制系统适应复制源和目的地之间的不同扩展大小，同时保持存储效率。

    Method and system for replicating stored information
    5.
    发明授权
    Method and system for replicating stored information 有权
    用于复制存储信息的方法和系统

    公开(公告)号：US08595457B1

    公开(公告)日：2013-11-26

    申请号：US12261315

    申请日：2008-10-30

    Applicant: Kapil Kumar ,  Hitesh Sharma ,  David Grunwald

    Inventor： Kapil Kumar ,  Hitesh Sharma ,  David Grunwald

    IPC: G06F12/00 ,  G06F13/00 ,  G06F13/28 ,  G06F5/00

    CPC classification number: G06F13/28 ,  G06F11/1662

    Abstract: Method and system for replicating a storage volume is provided. Information is adaptively replicated in a swap mode or a copy mode. When information is copied from a storage volume to a memory buffer, an application determines if another information transfer from the same source volume is pending. If a transfer from the same source is pending, then information is copied from the memory buffer to a stolen buffer in a copy mode. If a transfer from the same source is not pending, then instead of copying the information, the application enables a swap mode. During the swap mode, an operating system for a storage system swaps a pointer from the stolen buffer to information stored in the memory buffer. The memory buffer itself is invalidated so that no other module can access the memory buffer. Because the pointers are swapped, the application accesses information directly from the memory buffer.

    Abstract translation: 提供了复制存储卷的方法和系统。 信息在交换模式或复制模式下自适应地复制。 当信息从存储卷复制到存储缓冲区时，应用程序确定来自同一源卷的另一个信息传输是否处于待处理状态。 如果来自同一个源的传输是挂起的，那么在复制模式下将信息从内存缓冲区复制到被盗的缓冲区。 如果来自同一来源的传输未挂起，则不需要复制信息，应用程序将启用交换模式。 在交换模式期间，用于存储系统的操作系统将指示器从被盗的缓冲器交换到存储在存储器缓冲器中的信息。 内存缓冲区本身无效，因此没有其他模块可以访问内存缓冲区。 因为指针被交换，应用程序直接从内存缓冲区访问信息。

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