| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem that the rewrite life of a flash memory in a low-performance device is deteriorated when caching write data by a high-performance side device, and copying the data from the high-performance side device to the low-performance side device. <P>SOLUTION: This storage system is configured to maintain the size of a memory management unit in a low-performance non-volatile memory device, and to compare the size of write data with the size of the memory management unit, and to cache the write data by the high-performance non-volatile memory device when the size of the write data is smaller than that of the memory management unit, and otherwise, to write the write data to the low-performance device, and subsequently, to refer to a plurality of address values for the write data cached by the high-performance device, and to select an address segment in which the cached address values are consecutive only by the size of the memory management unit, and to copy data included in that address segment from the high-performance device to the low-performance device. <P>COPYRIGHT: (C)2009,JPO&INPIT |
