| 摘要 |
Provided is a computer system capable of reducing a load on a virtualization apparatus during backup processing, including: at least one first storage system; at least one second storage system; a virtualization apparatus; at least one host computer; a backup unit; and a data transmission unit having access to the first storage system, in which, when requested to take a backup of the virtualized data storage area, the backup unit obtains mapping information which indicates association between the virtualized data storage area and the first data storage area where data requested to be written in the virtualized data storage area is stored, and identifies, based on the obtained mapping information, the first data storage area corresponding to the virtualized data storage area that is requested to be backed up, and in which the data transmission unit transfers, to the storage unit of the second storage system, a copy of data stored in the first data storage area that is identified by the backup unit.
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