Storage system and method for backup
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United States of America Patent
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Jun 13, 2006
Issued Date -
N/A
app pub date -
Jul 20, 2004
filing date -
Oct 20, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A storage system which comprises a disk controller and a disk device having original volumes for backup and a storage pool for backup data. It incorporates a differential management program which checks whether the original volumes for backup are updated or not; a pool management program which allocates a disk area to the storage pool for backup data; a performance management program which manages the performance of each volume; and a backup control program which performs total backup control. A backup method by which recovery within a user-specified recovery object time is possible is selected according to the restore performance calculated by the performance management program and the total size of changed blocks after backup acquisition as counted by the differential management program.
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