| Summary: | 碩士 === 國立臺灣科技大學 === 資訊工程系 === 101 === The SSD technology development is more and more mature which the read and write performance are better than hard disk. For this reason, the technology of storage device will caused a great impact in the future. Although SSD has a lot of advantages, it also encounter some problems that life-time and garbage collection overhead should be solved. In present of SSD devices on market are almost SATA interface which should connect through southbridge. For the SATA interface, it suffered from speed bottleneck of SSD which the access speed of the SSD are limit of the channel. The SATA 2.0 and SATA 3.0 interface of speed is 3 Gb/s and 6 Gb/s respective. If the next generation of SATA interface is become more fast, it can not exceed the PCIe interface (the PCIe 1.1x4 speed is 10Gb/s). One of PCIe interface advantage is that can provide 10Gb Ethernet equate bandwidth. The other advantage is that it has more than 1 of PCIe 1.1x16 (the PCIe 1.1x16 speed is 40Gb/s) or more than 2 of PCIe 1.1x8 (the PCIe 1.1x8 speed is 20Gb/s) in computer motherboard now. Our studies are focus on PCIe-SSD of the latest technology product which use the northbridge to get connection and can quickly deliver the data. It can let SSD product get more effective, but it still suffered the problem of NAND flash memory. Our work can improve the PCIe-SSD performance and lift-time more effective than others work. The experimental results display that we are successful to improve wear leveling and increase the overall performance which the best performance 67.8\% and the best average write response time is 73\% on trace file compare with the opponent.
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