| 摘要 |
<p>A virtual tape device, which is interposed between a host and a library device, stores data transmitted from the host in a logical tape volume. For solving the problem that long time is required for restoring a system from writing abnormality of data, the virtual tape device comprises a storage device constituting the logical tape volume, a writing processing part for writing the logical tape volume into a physical tape volume of the library device, a managing table for managing a use situation of the physical tape volume of the library device and a change processing part changing the physical tape volume into which the logical tape volume is written when the physical tape volume managed by the managing table becomes a prescribed use state.</p> |
