| 摘要 |
To provide a data copy capability of copying data between storage devices while maintaining the data integrity even if the copy process is interrupted in a hierarchical connection arrangement of storage devices. A computer system includes a computer 100 and a plurality of storage devices 140, 160 connected to the computer 100 via a network, in which one storage device 140 has a first storage area 151 , allows the computer 100 to access a second storage area 170 in one or more other storage devices 160 via the storage device 140 , allocates the first storage area for copy of data from the second storage area 170 and copies data from the second storage area 170 into a first storage area 150.
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