| 摘要 |
PURPOSE:To improve the throughput proper to a device, by recording data of a transfer destination temporarily in a buffer area of a control part and reading out it to transfer it to another auxiliary recording device. CONSTITUTION:A buffer memory 6m is provided as a disk cache memory in a magnetic disk controller 6. A magnetic disk device 4 and a magnetic tape device 7 are connected through the controller 6, and data is transferred between devices 4 and 7 through the controller. In this case, data is transferred from the device and is read into the buffer 6m of the controller 6, and data in the buffer 6m is transferred and written in the device 7. Thus, data is transferred from the device 4 to the device 7 through the controller 6 within the capacity where the buffer 6m of the controller 6 can store data, and data is copied. Thus, data is transferred without passing a main storage device 2 to make it possible that the device performs essential processings. |
