STAFF: state transition applied fast flash translation layer

Abstract. Recently, flash memory is widely used in embedded applica-tions since it has strong points: non-volatility, fast access speed, shock resistance, and low power consumption. However, due to its hardware characteristics, it requires a software layer called FTL (flash translation layer). The main functionality of FTL is to convert logical addresses from the host to physical addresses of flash memory. We present a new FTL al-gorithm called STAFF (State Transition Applied Fast Flash Translation Layer). Compared to the previous FTL algorithms, STAFF shows higher performance and requires less memory. We provide performance results based on our implementation of STAFF and previous FTL algorithms.