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    • 6. 发明授权
    • Efficient redundant memory unit array
    • 高效冗余存储单元阵列
    • US08156405B1
    • 2012-04-10
    • US12011984
    • 2008-01-29
    • Christopher R. LumbR. Hugo Patterson
    • Christopher R. LumbR. Hugo Patterson
    • H03M13/00
    • G06F11/1092
    • A method of storing data is disclosed. A set of data blocks, including a plurality of proper subsets of data blocks, is stored. A plurality of first-level parity blocks is generated, wherein each first-level parity block is generated from a corresponding proper subset of data blocks within the plurality of proper subsets of data blocks without reference to other data blocks not in the corresponding proper subset. A second-level parity block is generated, wherein the second level parity block is generated from a plurality of data blocks included in at least two of the plurality of proper subsets of data blocks, and wherein recovery of a lost block in a given proper subset of data blocks is possible without reference to any data blocks not in the given proper subset.
    • 公开了存储数据的方法。 存储包括多个适当的数据块子集的数据块集合。 生成多个第一级奇偶校验块,其中每个第一级奇偶校验块是从数据块的多个适当子集内的数据块的相应的适当子集生成的,而不参考不在相应的适当子集中的其他数据块。 生成第二级奇偶校验块,其中从包括在多个适当的数据块子集中的至少两个中的多个数据块生成第二级奇偶校验块,并且其中恢复给定的适当子集中的丢失块 的数据块是可能的,而不参考不在给定的适当子集中的任何数据块。
    • 7. 发明授权
    • Merged collections
    • 合并收藏
    • US08126852B1
    • 2012-02-28
    • US12315374
    • 2008-12-01
    • R. Hugo Patterson
    • R. Hugo Patterson
    • G06F17/00
    • G06F17/30156G06F11/2094G06F17/30215
    • A method of determining whether a data segment is a duplicate using cooperating deduplicators is disclosed. The data segment is received. A first deduplicator is operated to to determine whether the incoming data segment is a duplicate based on first information available to the first deduplicator regarding stored data segments that are stored in a memory. A second deduplicator is selectively operated to determine whether the incoming data segment is a duplicate based on second information available to the second deduplicator; wherein the selective operation of the second deduplicator depends on the determination made by the first deduplicator.
    • 公开了一种使用合作的重复数据消除器来确定数据段是否是重复的方法。 接收数据段。 操作第一个重复数据消除器以根据第一个重复数据消除器可用于关于存储在存储器中的存储数据段的第一个信息确定输入数据段是否重复。 选择性地操作第二重复数据消除器,以基于可用于第二重复数据消除器的第二信息来确定输入数据段是否是重复的; 其中所述第二重复数据消除器的选择性操作取决于由所述第一重复数据消除器进行的确定。