Method and apparatus for data recovery system using storage...

Details Method and apparatus for data recovery system using storage... Method and apparatus for data recovery system using storage...

2011-07-12

2011-07-12

Guyton, Philip (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S006130, C714S020000, C711S161000, C711S162000

Reexamination Certificate

active

07979741

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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