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    • 2. 发明授权
    • Managing deduplication of stored data
    • 管理存储数据的重复数据删除
    • US08463742B1
    • 2013-06-11
    • US13117629
    • 2011-05-27
    • Jered J. FloydMichael FortsonAssar WesterlundJonathan Coburn
    • Jered J. FloydMichael FortsonAssar WesterlundJonathan Coburn
    • G06F17/30
    • G06F17/30156G06F17/30303
    • Managing data in a data storage system includes: receiving data to be stored in the data storage system; computing values corresponding to different respective portions of the received data; generating identifiers corresponding to different respective portions of the received data, with an identifier corresponding to a particular portion of data including the computed value corresponding to the particular portion of data and metadata indicating a location where the particular portion of data is being stored in the data storage system; storing at least some of the identifiers in an index until the index reaches a predetermined size; and in response to determining that a first identifier corresponding to a first portion of data, received after the index reached the predetermined size, was not already stored in the index before the first portion of data was received, storing the first identifier in the index and designating for removal at least a second identifier corresponding to a second portion of data to be removed from the index such that the index does not exceed the predetermined size.
    • 管理数据存储系统中的数据包括:接收要存储在数据存储系统中的数据; 计算对应于所接收数据的不同相应部分的值; 生成与所接收的数据的不同相应部分相对应的标识符,其中标识符对应于数据的特定部分,包括与数据的特定部分对应的计算值,以及指示数据的特定部分正在存储在数据中的位置的元数据 存储系统; 将索引中的至少一些标识符存储在索引中,直到索引达到预定大小; 并且响应于确定在索引达到预定大小之后接收的与数据的第一部分相对应的第一标识符尚未在接收到第一部分数据之前存储在索引中,将第一标识符存储在索引中,并且 指定用于移除至少一个对应于要从所述索引中移除的数据的第二部分的第二标识符,使得所述索引不超过所述预定大小。