An optimum chunk cutout method is selected according to the type of content.A storage apparatus is a storage apparatus for storing content in a backup volume in response to a content storage request from a host system connected to the storage apparatus via a network and includes a chunk cutout unit for cutting out the content into one or more chunks and a duplication judgment unit for managing a duplicate state of the chunk or chunks which have been cut out by the chunk cutout unit; wherein the chunk cutout unit selects a method for cutting out the chunk based on content type identification information indicating a type of the content.