| 摘要 |
<p>The control software and hardware in the tape drive control unit (350) creates and manages a header segment (105) at the beginning of the magnetic tape (100). This header segment (105) contains two sections, a first (502) of which is a data record directory used by the control unit (350) to denote the location of each data record written on the magnetic tape (100) as well as administrative information associated with the data record. The second section (501) of the header is an administrative information section that contains data relating to the magnetic tape (100) itself. The administrative information includes the identification of the host computer (1), the tape drive (300), write protect status of the magnetic tape (100), identification of the media, error record log and other information that enables the user, the host computer (1) and the tape drive control unit to manage the data records written onto the magnetic tape (100) without reference to any other administrative data.</p> |
