| 摘要 |
PROBLEM TO BE SOLVED: To safely manage a mirror of a volume between remote sites for providing a means for backup and recovery. SOLUTION: In this method for backup and recovery, a first storage subsystem connected to a first host and a second storage subsystem connected to a second host are used, and the first host and the second host are connected together via a path. A fist logic volume is arranged in the first storage subsystem, while a second logic and a third logic volume are stored in the second storage subsystem. The second logic volume copies the first logic volume to be in a synchronous condition with the first logic volume. The third volume copies the second logic volume. A recovery means places the third logic volume on the second logic volume, reads a file to be recovered from the third volume in the second host, writes the file in the second volume, and the first volume is synchronized again with the second volume. COPYRIGHT: (C)2003,JPO
|
