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標題: | 記憶體、快閃記憶體及硬碟之整合管理機制 Joint Management Schemes of RAM, Flash Memory and Disks |
作者: | Po-Chun Huang 黃柏鈞 |
指導教授: | 郭大維(Tei-Wei Kuo) |
關鍵字: | 儲存系統,記憶體,快閃記憶體,硬碟,效能, storage system,RAM,flash memory,hard disk,performance, |
出版年 : | 2012 |
學位: | 博士 |
摘要: | 近年來,隨著各項軟、硬體技術之日益發達,對資料的儲存需求迅速的增加,資料儲存系統設計的重要性也與日俱增。由於智慧型手機等新一代計算環境對於資料儲存系統的性能與可靠性要求越益嚴苛且多樣化,儲存系統的設計面臨著更嚴苛的挑戰。同時,由於快閃記憶體與硬碟等當前之主流儲存媒體其天生之存取特性與限制,儲存系統的設計正面臨困境,無法完全滿足新一代計算環境之資料儲存需求。有鑑於此,本論文考慮包括記憶體、快閃記憶體以及硬碟等當前之主流記憶及資料儲存媒體的特性,並試圖藉由整合性的統籌管理截長補短,以提升儲存系統之性能、可靠性,同時降低成本。於本論文的第一部分中,我們提出了一個機制,試圖解決低成本、大容量快閃記憶體之管理問題。本論文之第二部分則試圖探討隨機存取記憶體與快閃記憶體的整合管理問題,以進一步提升系統之效能。最後,我們考慮複合式硬碟之架構,並且整合管理快閃記憶體與硬碟,來改善儲存系統性能之可預測性及壽命。經由一系列之實驗,我們探討了本論文所提出方法之優點與限制,並對其可行性進行了驗證。 In recent years, the significance of data storage systems had been highlighted with the advances of various software and hardware technologies and the rapid growth of data storage demands. As next-generation computing environments, such as smart phones, have more serious and diversified demands on data storage, the design of data storage systems now face even tougher challenges, and can not completely respect the data storage demands from next-generation computing environments. In response, this dissertation jointly considers the characteristics of the mainstream memory and storage media, such as random-access memory (RAM), flash memory and hard disk, so as to best utilize the advantages of each memory/storage medium to improve the performance, reliability and cost of data storage systems. In the first part of this dissertation, we propose a strategy to alleviate the management problems of low-cost, huge-scale flash-memory storage systems. The second part of this dissertation investigates the joint management problem of RAM and flash memory to further improve the performance of the storage system. Last but not least, we consider the composite architecture of storage systems with hard disk and flash memory, so as to obtain a better predictability and lifetime of the storage systems. The benefits, limitations and the feasibility of the proposed strategies are then verified through a series of experimental studies. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/16364 |
全文授權: | 未授權 |
顯示於系所單位: | 資訊工程學系 |
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