Backup method and system by differential compression, and differential compression method
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United States of America Patent
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N/A
Issued Date -
Mar 18, 2004
app pub date -
Aug 18, 2003
filing date -
Aug 30, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A backup method by differential compression back up the data of a client by the server so as to decrease overhead at backup. After the client creates the associated differential compression data before backup, the client connects with the server and transfers the created differential compression data groups and association information to the server, and the server saves the difference compression data groups to a storage medium according to the association information, and disconnects the connection. When the data is restored, the server reads the saved differential compression data groups according to the association information and transfers the data to the client, and the client decompresses and develops the differential compression data groups according to the association information, and rebuilds the data.
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