| 摘要 |
PROBLEM TO BE SOLVED: To resolve a problem with some limits such as storing a large amount of redundant data causing a user not finding a proper file or increase of archive costs. SOLUTION: Data is migrated from a first CAS (contents addressable storage) system to a second CAS system. When the migration process is started, the second CAS system retrieves a list of the objects stored on the first CAS system. The second CAS system, based on the list, retrieves each object from the first CAS system, calculates an object ID for each object, and stores each object and the calculated object ID into the storage devices in the second CAS system. Methods for reducing downtime during the migration process are also disclosed. COPYRIGHT: (C)2008,JPO&INPIT
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