METHOD FOR WRITING DATA INTO FLASH MEMORY DEVICE, FLASH MEMORY DEVICE AND STORAGE SYSTEM

Embodiments of the present invention provide a method for writing data into a flash memory apparatus, a flash memory apparatus, and a storage system. In the embodiments of the present invention, when an effective capacity of a first block among multiple blocks is less than a size of first target data, a primary controller divides the first target data into first part and second part, where a size of the first part is the effective capacity of the first block, and a size of the second part is the size of the first target data minus the size of the first part; determines a second block from the multiple blocks, where the second block is a block that has been written with data but is not filled with data; and writes the first part into the first block and writes the second part into the second block, which can improve block utilization and save storage space of an SSD.