Solid state driver (SSD) based on flash memory has been widely used in various types of applications such as mobile devices, PC machines, and servers. Compared with conventional disk, SSD enjoys faster access speed, better shock resistance, and lower power. However, it will not completely replace the disk as the secondary storage in the short run due to its inherent properties such as asymmetric read/write and high price of per gigabyte. Integrating SSD and magnetic disk together can benefit from different performance advantage to obtain good high performance and low cost. This paper proposes a flash-aware multi-level cache scheme (FAMC) which considers the significant discrepancy between MLC type and SLC type SSDs. FAMC uses two types of SSD as a cache layer between main memory and magnetic disk. Depending on the characteristics of data access in database application and file management, FAMC conditionally caches the page evicted by buffer manager to different types of SSD. FAMC considers the impact of the write pattern and type of workloads on the system performance, which adopts flash-aware algorithms and data structures to manage the data stored in SSD. Furthermore, in view of the asymmetry of the replacement cost, the study proposes a flash-friendly buffer replacement policy. The strategy is implemented on a simulation storage system based on SLC type SSDs and MLC type SSDs, and its performance is evaluated. The experimental results show that FAMC can significantly reduce system response time and disk I/O cost.