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  本文關(guān)鍵詞： 固態(tài)硬盤存儲系統(tǒng) SATA接口 NAND Flash芯片 并行 性能優(yōu)化　出處：《中南大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：摘要：隨著信息爆炸式的增長,人們對存儲產(chǎn)品的存儲容量、存儲速度以及存儲數(shù)據(jù)的完整性與靈活性提出了新的要求。固態(tài)硬盤由于沒有傳統(tǒng)機(jī)械硬盤那樣的機(jī)械結(jié)構(gòu)特征,具有讀寫速度快、抗震性好、工作范圍寬、功耗小等優(yōu)點,將會成為存儲市場的主流。因而設(shè)計出高性能的基于SATA接口的固態(tài)硬盤具有重要的意義。 在分析了SATA接口特性、ATA命令技術(shù)以及NAND Flash閃存技術(shù)的基礎(chǔ)之上,以FPGA芯片XC5VFX130T為核心,設(shè)計了一種基于SATA3.0接口的多通道并行固態(tài)硬盤存儲系統(tǒng),該系統(tǒng)以NAND Flash為主要的存儲介質(zhì)。其中,為了充分利用SATA接口的高帶寬,設(shè)計加入了DBUF(Data Buffer)作為主要的緩存設(shè)計方案。NAND Flash的設(shè)計則是采用多通道并行的方法,從宏觀的角度拓寬了系統(tǒng)的帶寬。通過將DBUF、SATA與NAND的有效結(jié)合,提高了固態(tài)硬盤存儲系統(tǒng)的性能,從而充分提高主機(jī)設(shè)備間的傳輸速率。在充分利用并行硬件架構(gòu)的基礎(chǔ)上,軟件上采取的優(yōu)化方法主要為時間隱藏策略、數(shù)據(jù)預(yù)取策略、數(shù)據(jù)補(bǔ)償策略等,從而使優(yōu)化后速度相對于優(yōu)化前提高了38.8%。 最后用SATA邏輯分析儀等工具對SATA模塊、NAND Flash模塊以及系統(tǒng)的功能和性能進(jìn)行了驗證。結(jié)果表明多通道并行固態(tài)硬盤存儲系統(tǒng)工作正常、接口協(xié)議滿足SATA3.0中600MB/s的要求、存儲性能較好。
[Abstract]:Absrtact: with the explosive growth of information, people put forward new requirements for storage capacity, storage speed, integrity and flexibility of storage data. With the advantages of fast reading and writing, good seismic resistance, wide range of work and low power consumption, it will become the mainstream of the storage market. Therefore, it is of great significance to design a high-performance solid-state hard disk based on SATA interface. On the basis of analyzing the characteristic of SATA interface and NAND Flash flash memory technology, a multi-channel parallel solid-state hard disk storage system based on SATA3.0 interface is designed based on FPGA chip XC5VFX130T. In this system, NAND Flash is used as the main storage medium. In order to make full use of the high bandwidth of SATA interface, DBUF(Data buffer is added as the main cache design scheme. NAND Flash is designed by multi-channel parallel method. The bandwidth of the system is widened from the macro point of view. The performance of solid state hard disk storage system is improved by combining DBUFS SATA with NAND effectively, and the transmission rate between host devices is improved fully. On the basis of making full use of parallel hardware architecture, the performance of solid state hard disk storage system is improved. The optimization methods adopted in software are mainly time hiding strategy, data prefetching strategy, data compensation strategy and so on, so that the optimized speed is 38.8% higher than that before optimization. Finally, SATA logic analyzer is used to verify the function and performance of the SATA module and the system. The results show that the multi-channel parallel solid-state hard disk storage system works normally, and the interface protocol meets the requirements of 600MB / s in SATA3.0. Good storage performance.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TP333.35

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本文編號：1543956