Patent ID: 7565500

Claim:
A method for implementing migration with respect to storage areas, said areas being formed on a storage device managed by a storage management system, said method comprising the steps of: acquiring information on a purpose of use of a storage area for which the migration is to be implemented, and a relative physical position of said storage area, wherein the relative physical positions are relative positional relations according to a purpose of use and a physical position in which a previously allocated storage area is maintained; judging, with reference to the information acquired about the purpose of use and relative physical position of said storage area, whether the migration is to be implemented with respect to said storage area; selecting said storage area if judged to match required conditions with respect to relative positional relations for the previously allocated storage area and the storage area to be allocated, so that the unallocated storage area is varied based on the purpose of use and the relative physical position in which the previously allocated storage area is maintained; changing information of the storage management system on the storage areas, in accordance with the storage area selected and independently of the migration; and implementing the migration with respect to said storage area selected.