| 摘要 |
A copy control apparatus implements initial copies which copy data of the storage apparatus of a copy source to the storage apparatus of a copy destination, and, in the control of keeping the data of the copy source and that of copy destination equivalent, decreases the multiplicity in accordance with the increase of the number of write requests in which the updating of the data of the copy source is not yet reflected to the data of the copy destination, and implements a plurality of initial copies within the decreased range of multiplicity.
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