| 摘要 |
According to an embodiment, a data storage system includes a host computer performing input and output of data, and a data storage device connected to the host computer. The data storage device includes a compressor to compress data input from the host computer; a memory to store compressed data compressed by the compressor; and a first interface. When first writing data a input from the host computer, the first interface sends second writing data obtained by compressing the first writing data to the host computer. When address information corresponding to the first writing data is input from the host computer, the first interface sends read-compressed data representing the compressed data read from the memory based on the address information, to the host computer. The host computer includes a determiner to determine that the first writing data is already stored when the second writing data is identical to the read-compressed data. |
| 主权项 |
1. A data storage system comprising:
a host computer that performs input and output of data; and a data storage device that is connected to the host computer, wherein the data storage device includes
a compressor configured to compress data input from the host computer,a memory configured to store data compressed by the compressor, anda first interface configured to
when first writing data is input from the host computer, send second writing data, which is obtained by the compressor by compressing the first writing data, to the host computer, andwhen address information corresponding to the first writing data is input from the host computer, send read-compressed data, which represents the compressed data read from the memory based on the address information, to the host computer, and the host computer includes a determiner configured to, when the second writing data is identical to the read-compressed data, determine that the first writing data is already stored. |
