sentences:  Vault asserted that the archival copy exemption of 17 U.S.C.§117(2) was designed to protect only against "destruction or damage by mechanical or electrical failure," but not against (for example) loss or destruction of a disk.The court declined to construe the archival exemption in this manner, saying that even though it had appeal, it was not the law and that only the Congress could decide to limit the exemption in that way.