1. A data managing method for managing data in a data storage structure of a first storage apparatus, the data storage structure including a first storage structure and a second storage structure, the method comprising: displaying the first storage structure to a user, wherein the respective first storage structure and the second storage structure correspond to storage structures managed by different systems, and wherein the first storage structure is a logical storage structure and the second storage structure is a physical storage structure; storing information in a second storage apparatus, wherein said information establishes a correspondence relationship between first information which indicates a logical storage place of data by said first storage structure, and second information which indicates a physical storage place of said data by said second storage structure; selecting data which satisfies a predetermined storage destination changing condition for changing a storage destination; moving said selected data from a logical storage place in said first storage structure to a new logical storage place designated by said storage destination changing condition; changing said second information into information which indicates a new physical storage place after said data has been moved; and storing said information that establishes a correspondence relationship between said first information and said changed second information in said second storage apparatus.