Patent ID: 7971265

Claim:
A content management system comprising a plurality of storage apparatuses that can communicate with one another, wherein a first storage apparatus, which is one of the plurality of storage apparatuses, stores therein, in correspondence, (i) first content and (ii) copy destination information indicating one of the plurality of storage apparatuses to which the first content has been sent, wherein the first storage apparatus includes: a send unit operable to send the first content and the copy destination information therefrom to a second storage apparatus, which is another one of the plurality of storage apparatuses and is not indicated by the copy destination information; and a delete unit operable to delete the first content and the copy destination information from the first storage apparatus after the send unit has sent the first content and the copy destination information, wherein the second storage apparatus includes an add unit operable to additionally store, in correspondence, the first content and the copy destination information received from the first storage apparatus into the second storage apparatus, wherein the one of the storage apparatuses indicated by the copy destination information stores therein, in correspondence, (i) second content that is the same as the first content and (ii) copy source information indicating one of the plurality of storage apparatuses in which the first content and the copy destination information are stored at a time of acquisition of the second content, and wherein the one of the plurality of storage apparatuses indicated by the copy destination information includes a rewrite unit operable to, when the first storage apparatus sends the first content and the copy destination information to the second storage apparatus, rewrite the copy source information such that the copy source information indicates the second storage apparatus.