Patent ID: 7765189

Claim:
A data migration apparatus that relocates data from a migration source to a migration destination, said migration source including a data layout mode in which a predetermined file to be migrated with a predefined format at least including pointer information on data and data pointed to by the pointer information in the predetermined file are stored in a distributed manner in storage means in said migration source, said data migration apparatus comprising a processor executing: a unit that checks whether a file to be migrated is the predetermined file and, if the file is the predetermined file, reads data pointed to by the pointer information in said predetermined file from the storage means in said migration source, and writes the data in associated storage means in the migration destination; and a unit that writes another predetermined file in said storage means in the migration destination, in a mode corresponding to said data layout mode in said migration source, in which the another predetermined file and the data in the migration destination are stored in a distributed manner, said another predetermined file at least including pointer information pointing to the data written in the associated storage means in the migration destination, said another predetermined file conforming to a predefined format in the migration destination.