The invention discloses a
solid state disk and a data read-write method. The
solid state disk comprises a memory unit, a write-in
control unit and a read
control unit, wherein the memory unit comprises an
original data region and a
backup data region, which have identical memory space structure, and the memory space address of the
original data region corresponds to that of the
backup data region one by one; the write-in
control unit is used for simultaneously writing the data into the
original data region and the
backup data region of the memory unit according to the data write-in command; and the read control unit is used for reading the data from the original data region of the memory unit according to the data reading command, and when the read error happens, the data is read from the backup data region of the memory unit according to the correspondence of the memory space address. With the above technical scheme, the properties of the
solid state disk
flash memory chip is used for performing the identical write-in operation for different memory regions of the same hard disk, so the reliability of the data is improved under the condition that the performance of the hard disk is not influenced.