Method and apparatus for recovering data for a file in a plurality of equipments
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United States of America Patent
Stats
-
Jun 19, 2001
Grant Date -
N/A
app pub date -
Apr 28, 1989
filing date -
Oct 30, 1985
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to the present invention, a file recovery system is provided in which the commands for recovering files such as a historical file are unnecessitated and the recovery system configuration is independent of the host processing system. That is, since the equipment for achieving a file recovery does not have information about the location of the recovery data, information about the content of a file to be recovered is transmitted to a transmission line. The other equipments asynchronously receive the information and judges whether or not a file containing the same content exists in the own system. If its file exists, the content of the file is transmitted to the transmission line. The equipment achieving the file recovery asynchronously receives from the transmission line the file data of files such as a historical file and establishes data consistency by use of the buffered current data and the event number, thereby recovering files such as a historical file.
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