| 摘要 |
This invention enables resources included in a storage system to be effectively used. In a storage system 1 including a host computer 3, a first storage apparatus 10 that receives a data I/O request from the host computer 3, the second storage apparatus 10, and including a function of external attachment processing for managing the entity of a first logical volume of the first storage apparatus 10 in a second logical volume of the second storage apparatus 10, when a problem occurs in performance of the first storage apparatus 10, the external attachment processing is released, while external attachment release processing is performed in which path for accessing from the host computer 3 the second logical volume is switched to allow direct access from the host computer 3 to the second logical volume. When the problem in performance of the first storage apparatus 10 is solved, path switching is performed again to resume the external attachment processing. |
