Implementation method of solid state drive (SSD) and disk-based reliable mixed storage system

The invention discloses an implementation method of a solid state drive (SSD) and disk-based reliable mixed storage system. According to the method, a mixed storage system is constructed by using an SSD and a disk; the SSD responds to a read-write request of a user, the disk serves as a backup, and when the user sends a read request, the SSD completely responds to the read request; when the user sends a write request and writes data into the SSD, the data are backed up by the disk; if the SSD fails, the data of the SSD can be restored according to the data on the disk; and if the disk fails, the data in the disk can be reconstructed according to the data on the SSD. In order to overcome the defects of lower SSD write function, short life and higher cost in the prior art, according to the implementation method disclosed by the embodiment of the invention, the mixed storage system is implemented by using a cheap disk as the backup, the high performance of the SSD is ensured, the reliability of the entire mixed storage system is improved, and the cost of the mixed storage system is controlled within an acceptable range. The method has the advantages of high read-write performance, high system reliability, difficulty in occurrence of relevant failure, long service life and low cost.