| 摘要 |
Summary Problem To recover data of a virtual volume to which an external volume was assigned even if an unusual status occurs in the first storage apparatus. Solution The controller of the storage apparatus, to the respective pages of the pool corresponding to the virtual volumes, assigns the internal pool volumes configured of storage devices of the storage apparatus or the external pool volumes configured of storage devices of the storage apparatus, and the management server stores the configuration information indicating the correspondence relationship between the external pool volumes assigned to the respective pages of the pool and the virtual volumes, in the case of a total functional shutdown of the storage apparatus, creates a virtual volume and a pool in the storage apparatus, associates the virtual volume with the external pool volume in accordance with the stored configuration information, provides the virtual volume to the host computer and instructs path switching.
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