Patent 7900013 was granted and assigned to Hitachi on March, 2011 by the United States Patent and Trademark Office.
A computer specifies the configuration of a first storage device by referencing first configuration information relating to the configuration of a first storage system including the first storage device, specifies one or more storage medium access performances corresponding to the first storage device by referencing the storage medium performance information, and calculates a first access performance index of the first storage device based on one or more specified storage medium access performances. The computer then references storage medium performance information and second configuration information relating to the configuration of a second storage system including a second storage device, and determines a second storage device having an access performance index that is at least equal to the calculated first access performance index.