A storage management apparatus, a storage management method and a storage management program

摘要

A purpose is to perform migration considering an I/O load that will be generated during the migration. To migrate data from one array group to another array group, a bandwidth that is available for use between the movement source array group and the movement destination array group is calculated, a volume (212) whose write I/O amount is smaller than the calculated bandwidth is selected (S208) wherein the write I/O amount is the information transmission amount of information that is written, and data is migrated from the selected volume to the movement destination array group (21).