Method for clipping migration candidate file in hierarchical storage management system
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United States of America Patent
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Apr 30, 2013
Grant Date -
Oct 28, 2010
app pub date -
Jun 23, 2009
filing date -
Apr 23, 2009
priority date (Note) -
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Abstract
The system of the present invention curbs an unnecessary inter-tier file migration and provides an inter-tier file migration that conforms to the utilization state. The hierarchical storage management system respectively migrates a frequently accessed file to the upper Tier, and an infrequently accessed file to the lower Tier. This system carries out inter-tier file migration in conformance with the utilization state. This system provides functions for anchoring a Tier for storage for a specified file, and for not permitting an inter-tier file migration.
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