Invention Grant
US07979741B2 Method and apparatus for data recovery system using storage based journaling 有权
用于基于存储的日志记录的数据恢复系统的方法和装置

Method and apparatus for data recovery system using storage based journaling
Abstract:
A storage system maintains a journal and a snapshot of one or more data volumes. Two journal entry types are maintained, an AFTER journal entry and a BEFORE journal entry. Two modes of data recovery are provided: “fast” recovery and “undo-able” recovery. A combination of both recovery modes allows the user to quickly recover a targeted data state.
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