Patent Number: 8,719,533

Title: Storage apparatus, computer system, and data migration method

Abstract: Provided is a method of using a dynamic chunk allocation function to efficiently carry out data volume migration. A storage apparatus according to the present invention includes first and second storage units and divides a storage extent in the second storage unit into chunks to add the chunks to a chunk pool to dynamically allocate the chunks in the chunk pool to a newly created logical data volume (see FIG. 3).

Inventors: Terayama; Atsumi (Kawasaki, JP), Nagami; Akihisa (Yokohama, JP), Tanaka; Toru (Sagamihara, JP), Kaneda; Yasunori (Yokohama, JP)

Assignee: Hitachi, Ltd.

International Classification: G06F 12/00 (20060101)

Expiration Date: 5/06/12018