| 摘要 |
<p>A mainframe system disk control unit 7 is provided with a means 22 of accessing open system storage 18 connected to a SAN and a means 22 of converting the input and output data format to that of the open system, and the mainframe 1 is made to access a volume 18 of open system storage in the same manner as a volume 5 under control of the mainframe system disk control unit 7. By this means, data in the open system storage is backed up to the mainframe system. Moreover, communication is performed between the program on the mainframe 1 and the program on an open system host computer 17, and prior to starting backup, the updating of data in the open system storage system is prohibited.</p> |
