1. Motivation

- Hybrid hard disk employs a NAND flash memory as a non-volatile cache

- Efficient use of NVC is important for performance and power consumption

2. Research goals

- Increasing a ratio of HDD spin-down time and reduction of power consumption

- Pinning policy for the best I/O response time about booting and application launching

- Maximizing of parallelization of hard disk drive and flash memory

3. Published papers

Young-Jin Kim, Sung-Jin Lee, Kangwon Zhang, and Jihong Kim, "I/O performance optimization technique for hybrid hard disk-based mobile consumer devices," IEEE Transactions on Consumer Electronics, Vol. 53, Issue 4, pp 1469-1476, November 2007

Young-Jin Kim, Jihong Kim, "DAC: A Device-Aware Cache Management Algorithm for Heterogeneous Mobile Storage Systems," IEICE Transactions on Information and Systems, Vol. E91-D, Issue 12, pp. 2818-2833, December 2008

Young-Jin Kim, Jihong Kim, Jeong-Bae Lee, and Kee-Wook Rim, "PAW: A Pattern-Aware Write Policy for a Flash Non-volatile Cache," IEICE Transactions on Information and Systems, Vol. E93-D, Issue 11, pp. 3017-3026, November 2010

Young-Jin Kim, Jihong Kim, "ARC-H: Adaptive replacement cache management for heterogeneous storage devices ," Journal of Systems Architecture, Vol. 58, Issue 2, pp. 86-97, February 2012