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    • 3. 发明授权
    • Methods and infrastructure for performing repetitive data protection and a corresponding restore of data
    • 执行重复数据保护的方法和基础设施以及相应的数据恢复
    • US08572040B2
    • 2013-10-29
    • US11741163
    • 2007-04-27
    • Oliver AugensteinThomas Prause
    • Oliver AugensteinThomas Prause
    • G06F7/00
    • G06F11/1471G06F11/1469G06F11/2094
    • The present invention provides methods and an infrastructure for performing repetitive data protection and a corresponding restore of data for block oriented data objects comprising several indexed segments. For implementing the invention, timestamps tk are set by a timer k. Only the first data modification of a segment is recorded, after a timestamp tk has been set, by storing the old data contents of said segment together with the segment index j and said timestamp tk as undo-log block in a first journal j0, before overwriting said segment with the modified new data. Besides, said undo-log blocks are transmitted to N journals ji for storing redundant undo-log information, with N>1 and i=0, . . . , N−1. According to the present invention for each journal ji journal-specific timestamps tk/i are generated, so that each journal ji is written for a different set of timestamps tk/i.
    • 本发明提供了用于执行重复数据保护的方法和基础设施以及用于包括多个索引段的面向块的数据对象的数据的相应恢复。 为了实现本发明,时间戳tk由定时器k设置。 在经过时间戳tk设定之后,仅通过在第一期刊j0中将所述段的旧数据内容与段索引j和所述时间戳tk一起存储为撤销日志块来记录段的第一数据修改。 用修改的新数据覆盖所述段。 此外,所有的撤销日志块都传送到N个日志ji,用于存储冗余的撤消日志信息,N> 1且i = 0。 。 。 ,N-1。 根据本发明,对于每个日志ji,日志特定的时间戳tk / i被生成,使得每个日志ji被写入不同的时间戳集合tk / i。