A storage management method is disclosed. The storage management method includes the following steps: an administrator receives a data write request, determines the data types of the write-targeted data pages (S1301), and writes different logical blocks for write-targeted data pages of different data types (S1302), and the data write command is transferred to the SSD. The data write command is used to write the write target data corresponding to at least one allocated logical block Carries information of pages and at least one allocated logical block (S1303); The SSD receives the data write command and writes the write-target data pages corresponding to the at least one allocated logical block to the physical block corresponding to the at least one allocated logical block based on the data write command (S1304). This effectively reduces the write amplification that occurs when erasing the physical block of the SSD.
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