Backup system and duplicating apparatus
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United States of America Patent
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Jul 25, 2006
Grant Date -
Apr 4, 2002
app pub date -
Feb 27, 2001
filing date -
Oct 3, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A backup system which can improve reliability of data without sacrificing availability of a data processing system and a duplicating apparatus employed in the backup system. The backup system includes a duplicating apparatus for taking in data in the transfer of the data and codes from a host apparatus to a storage apparatus and holding the data as duplicated data, the duplicating apparatus including a code fetching unit to fetch the codes and hold the fetched codes as duplicated codes, and a data verifying unit to verify existence or nonexistence of an error in the data by comparing the taken data and the duplicated data.
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