STORAGE SYSTEM AND DATA MIGRATION CORRESPONDENCE RETRIEVAL SYSTEM

摘要

PROBLEM TO BE SOLVED: To reduce a data capacity consumed by information needed to access entity data moved to another storage in the data capacity of the storage of a data migration origin compared with a conventional system. SOLUTION: The storage system includes: a first storage as a migration destination for storing the entity data and first index information related to the entity data; and a second storage as a migration origin for storing link information for accessing the entity data and second index information which is related to the link information and includes a hash value included in the first index information. COPYRIGHT: (C)2010,JPO&INPIT