DASD-free non-volatile updates
    1.
    发明授权
    DASD-free non-volatile updates 有权
    无DASD的非易失性更新

    公开(公告)号:US06678787B2

    公开(公告)日:2004-01-13

    申请号:US09745328

    申请日:2000-12-21

    IPC分类号: G06F1200

    摘要: System for the storage and maintenance of data sets updates in a storage subsystem, that comprises direct access storage device(s) that serves as the main storage of the storage subsystem and on which the data sets are originally stored; a Cache memory storage device that enables fast interaction with the storage subsystem, on which a copy of the data sets is stored; a non-volatile storage device partitioned into a plurality of fixed size non-volatile memory pages. The system employs an update process, in which the changes to the data sets are applied to the data set copy stored on the Cache memory device; a journal of the changes that are being made to the data sets stored on the Cache memory device, utilizing the non-volatile memory pages to store update records reflecting the changes in the data sets; a reconstruction process in which the data sets are reconstructed utilizing the update records stored on the non-volatile memory pages, and the data sets stored on the direct access storage device; and a process for freeing arbitrary non-volatile pages from their prior association with data sets that are stored in the Cache memory.

    摘要翻译: 用于在存储子系统中存储和维护数据集更新的系统,其包括用作存储子系统的主存储并且最初存储数据集的直接存取存储设备; 缓存存储器存储设备,其能够与存储有数据集的副本的存储子系统进行快速交互; 分离成多个固定大小的非易失性存储器页的非易失性存储设备。 系统采用更新过程,其中对数据集的改变被应用于存储在高速缓冲存储器设备上的数据组副本; 对存储在高速缓冲存储器设备上的数据集进行改变的日志,利用非易失性存储器页存储反映数据集中的变化的更新记录; 使用存储在非易失性存储器页面上的更新记录和存储在直接存取存储设备上的数据集来重建数据集的重建过程; 以及从任何非易失性页面与先前与存储在高速缓存存储器中的数据集相关联的过程。

    File system object-based deduplication
    2.
    发明授权
    File system object-based deduplication 失效
    文件系统对象重复数据删除

    公开(公告)号:US08660997B2

    公开(公告)日:2014-02-25

    申请号:US13216272

    申请日:2011-08-24

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30159

    摘要: Systems and methods for optimizing deduplication in a data storage system are provided. The method comprises associating a first name with first data blocks including first content stored in a data storage system, wherein the first name is associated with the first data blocks by way of a reference to a first meta file that points to a data file which points to the first data blocks; storing a first signature derived from the first content in an indexing data structure, wherein the first signature is used to associate the first name with the first data blocks and as means to verify whether a second content is a duplicate of the first content, based on value of a second signature derived from the second content.

    摘要翻译: 提供了在数据存储系统中优化重复数据消除的系统和方法。 该方法包括将第一名称与包括存储在数据存储系统中的第一内容的第一数据块相关联,其中通过引用指向指向数据文件的第一元文件来指定第一名称与第一数据块相关联 到第一个数据块; 将从所述第一内容导出的第一签名存储在索引数据结构中,其中所述第一签名用于将所述第一名称与所述第一数据块相关联,以及作为用于基于所述第一内容是否与所述第一内容重复的第二内容的方式, 从第二内容导出的第二签名的值。