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  本文關鍵詞：基于IP-SAN的智能固態(tài)緩存網(wǎng)絡存儲系統(tǒng)的研究　出處：《南京林業(yè)大學》2012年碩士論文　論文類型：學位論文

  更多相關文章： IP-SAN 獨立冗余磁盤陣列 智能固態(tài)緩存 邏輯卷管理 iSCSI 網(wǎng)絡存儲

【摘要】：隨著云存儲時代的到來，，網(wǎng)絡數(shù)據(jù)存儲不僅僅在容量上呈爆炸式增長，在性能和可靠性上也有越來越高的要求。而現(xiàn)今的機械硬盤構建的SAN存儲系統(tǒng)，在大容量以及順序讀寫方面雖然具有很大優(yōu)勢，但已經無法滿足社會發(fā)展所帶來的新的需求，例如虛擬技術以及基于數(shù)據(jù)庫的視頻點播、電子商務等應用，對快速隨機訪問要求很高。固態(tài)硬盤以其高隨機性能、超低延時等優(yōu)勢倍受青睞，但其高昂的價格讓存儲界望塵莫及。 鑒于此，本文研究并實現(xiàn)了智能固態(tài)緩存技術，提出了基于IP-SAN的具有高隨機性能的智能固態(tài)緩存網(wǎng)絡存儲系統(tǒng)解決方案。本課題主要研究內容如下： 1、闡述了現(xiàn)階段國內外對隨機性能的研究狀況，研究了主流網(wǎng)絡存儲架構特點。研究了RAID技術，分析和比較了不同RAID級別實現(xiàn)機制及其特點。 2、詳細研究了linux內核的塊設備和設備映射機制，分析了linux內核中數(shù)據(jù)的I/O請求方式和實現(xiàn)機制，研究了linux內核實現(xiàn)邏輯設備與物理設備的映射過程。詳細介紹了映射設備、映射目標和映射表三者的結構和它們之間的關系�；诖�，設計并實現(xiàn)了智能固態(tài)緩存技術，極大的提升了存儲系統(tǒng)的隨機性能。著重闡述了智能固體緩存的邏輯架構和實現(xiàn)機制，介紹了其創(chuàng)建方法和各功能函數(shù)的具體實現(xiàn)，并在本地磁盤陣列上運用該智能固態(tài)緩存功能對隨機讀寫性能進行了比較。 3、研究了網(wǎng)絡存儲系統(tǒng)中的邏輯卷管理和iSCSI協(xié)議的實現(xiàn)。舉例說明了邏輯卷管理的實現(xiàn)過程，研究了iSCSI的體系結構、錯誤恢復機制，以及會話實現(xiàn)過程。iSCSI網(wǎng)絡采用雙網(wǎng)卡聚合，研究了網(wǎng)卡聚合的原理和創(chuàng)建方法，以實現(xiàn)負載均衡和故障切換技術，進一步提升存儲系統(tǒng)的性能。 4、最后對整個網(wǎng)絡存儲系統(tǒng)的功能、性能和穩(wěn)定性進行了全面詳細的測試。并對測試結果進行了比較和分析。
[Abstract]:With the arrival of cloud storage era, network data storage not only has explosive growth in capacity, but also has more and more high requirements in performance and reliability. Nowadays, SAN storage system is constructed by mechanical hard disk. Although it has great advantages in large capacity and sequential reading and writing, it can not meet the new needs brought by social development, such as virtual technology, database based video on demand, e-commerce and other applications. The demand for fast random access is very high. Solid state hard disk is very popular for its advantages of high random performance and ultra-low delay, but its high price makes the storage world out of reach. In view of this, this paper studies and implements the intelligent solid state cache technology. An intelligent solid state cache network storage system with high random performance based on IP-SAN is proposed. The main contents of this paper are as follows: 1. The research status of random performance at home and abroad, the characteristics of mainstream network storage architecture, and the RAID technology are described. The implementation mechanism and characteristics of different RAID levels are analyzed and compared. 2. The block device and device mapping mechanism of linux kernel is studied in detail, and the I / O request mode and implementation mechanism of data in linux kernel are analyzed. The mapping process between logical devices and physical devices in linux kernel is studied. The structure of mapping devices, mapping targets and mapping tables and their relationships are introduced in detail. The intelligent solid state cache technology is designed and implemented, which greatly improves the random performance of the storage system. The logical architecture and implementation mechanism of the intelligent solid state cache are described in detail. The creation method and the realization of each function function are introduced, and the performance of random reading and writing is compared by using the intelligent solid state cache function on the local disk array. 3. The realization of logical volume management and iSCSI protocol in network storage system is studied, the implementation process of logical volume management is illustrated, and the architecture of iSCSI and the mechanism of error recovery are studied. The principle and creation method of network card aggregation are studied in order to realize load balancing and failover technology and further improve the performance of storage system. Finally, the function, performance and stability of the whole network storage system are tested in detail, and the test results are compared and analyzed.
【學位授予單位】：南京林業(yè)大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TP333

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本文編號：1405218