Data backup using metadata mapping
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United States of America Patent
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Aug 14, 2018
Grant Date -
Jan 4, 2018
app pub date -
Sep 19, 2017
filing date -
Aug 8, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An information processing apparatus, backup method, and program product that enable efficient differential backup. In one embodiment, an information processing apparatus for files stored in a storage device includes: a metadata management unit for managing metadata of files stored in the storage device; a map generation unit for generating a map which indicates whether metadata associated with an identification value uniquely identifying a file in the storage device is present or absent; and a backup management unit for scanning the metadata to detect files that have been created, modified, or deleted since the last backup, and storing at least a data block and the metadata for a detected file in a backup storage device as backup information in association with the identification value.
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