| 摘要 |
According to one embodiment, a storage apparatus includes a first storage unit, a second storage unit and a control module. The control module stores the address of a block data item and a block identifier unique to the block data item, included in a write request, in the second storage unit such that the address and the block identifier are associated with each other when a request to specify the writing of data including the block data item into the storage apparatus has been generated at a host apparatus and when the host apparatus has transmitted the write request because the data item has coincided with any one of the block data items stored in the cache of the host apparatus.
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