1. A method of testing a system-managed duplexed structure, said method comprising: testing a system-managed duplexed structure employing a testcase, said system-managed duplexed structure comprising a primary structure and a secondary structure; and wherein said testing further comprises generating a request for one instance of the system-managed duplexed structure and processing said request, said processing comprising: determining whether said one instance of the system-managed duplexed structure comprises the primary structure or the secondary structure; responsive to said determining, obtaining primary structure information or secondary structure information corresponding to said one instance; and employing said primary structure information or secondary structure information in directing said request to said one instance.