本文選題：磁盤陣列 + 多模塊�。� 參考：《武漢紡織大學(xué)》2012年碩士論文

【摘要】：磁盤陣列的性能決定了整個(gè)系統(tǒng)的性能，對陣列的研究，若是直接通過搭建真實(shí)硬件平臺，顯然是能得到比較真實(shí)的實(shí)驗(yàn)數(shù)據(jù)的，但其硬件價(jià)格是非常昂貴的，而且進(jìn)行系統(tǒng)優(yōu)化也比較困難，此種方法研究時(shí)較少采用；如果采用計(jì)算機(jī)模擬的方法進(jìn)行仿真研究，則不需要硬件支持，并能很方便的配置和搭建各種陣列類型，，能很方便的進(jìn)行各種優(yōu)化、比較，這種低成本、靈活、方便的研究方法已經(jīng)被廣泛采用。目前為止，國內(nèi)并沒有自己獨(dú)立開發(fā)的存儲系統(tǒng)的模擬軟件，大部分的陣列系統(tǒng)的模擬研究工作都只是基于卡內(nèi)基梅隆DiskSim這個(gè)存儲模擬軟件而進(jìn)行的。 基于以上情況，本文以磁盤技術(shù)、文件系統(tǒng)和陣列原理為基礎(chǔ)，研究了各種陣列的存儲性能及數(shù)據(jù)可靠性，并選定陣列研究的主要性能指標(biāo)，如陣列的存儲訪問效率、容錯(cuò)性等。通過對多模塊原理的深入研究，將整個(gè)存儲系統(tǒng)劃分為主機(jī)模塊、帶寬模塊、轉(zhuǎn)換模塊、控制模塊、磁盤模塊、以及無關(guān)模塊，并對各個(gè)模塊的功能進(jìn)行了細(xì)致劃分。同時(shí)，還研究了如何通過不同模塊的組合，配置不同的存儲系統(tǒng)。研究了多模塊模型的實(shí)際應(yīng)用解決方案，并深入研究了整個(gè)存儲模擬系統(tǒng)的請求訪問流程，詳細(xì)介紹了相應(yīng)性能指標(biāo)的計(jì)算方法。深入研究了各模塊相關(guān)算法的，比如控制模塊的校驗(yàn)算法，磁盤模塊的請求調(diào)度算法等；還研究了正常狀態(tài)和降級狀態(tài)下的陣列的存儲性能。研究如何使用多線程技術(shù)，更加逼真的模擬多客戶訪問陣列的這個(gè)動態(tài)交互過程。 本研究主要是針對多模塊可配置磁盤陣列模型做出了一系列的研究設(shè)計(jì)并編程實(shí)現(xiàn)，軟件支持RAID0、RAID1、RAID3、RAID5、RAID6等主流陣列級別，另外，還添加了RAID5x陣列。經(jīng)實(shí)驗(yàn)檢驗(yàn)，該軟件已經(jīng)能對陣列存儲系統(tǒng)進(jìn)行較為真實(shí)的模擬，進(jìn)一步優(yōu)化后，將可以作為磁盤陣列性能、可靠性以及陣列優(yōu)化方法的一個(gè)模擬研究平臺。
[Abstract]:The performance of the disk array determines the performance of the whole system. The research on the array, if directly by building a real hardware platform, is obviously able to get more real experimental data, but its hardware price is very expensive, and it is difficult to optimize the system. The simulation method does not need hardware support, and can easily configure and build various array types. It can be easily optimized and compared. This low cost, flexible and convenient research method has been widely adopted. At present, there is no simulation software of the independent development of the storage system at home. Some of the simulation studies of array systems are based on Carnegie Mellon DiskSim storage simulation software.
Based on the above situation, the storage performance and data reliability of various arrays are studied on the basis of disk technology, file system and array principle, and the main performance indexes of the array are selected, such as the storage access efficiency and fault tolerance of the array, and the whole storage system is divided into host modules through in-depth study of the multi module original principle. Block, bandwidth module, conversion module, control module, disk module, and unrelated module, and the function of each module are carefully divided. At the same time, how to configure different storage systems through the combination of different modules is also studied. The practical application solution of the multi module model is studied, and the whole storage simulation system is deeply studied. The request access process is introduced in detail, and the calculation method of the corresponding performance index is introduced in detail. The related algorithms of each module are deeply studied, such as the check algorithm of the control module, the request scheduling algorithm of the disk module and so on. The storage ability of the array in the normal state and the degraded state is also studied. Simulate the dynamic interaction process of multi client access arrays.
In this study, a series of research designs and programming implementations are made for the multi module configurable disk array model. The software supports RAID0, RAID1, RAID3, RAID5, RAID6 and other mainstream array levels. In addition, the RAID5x array has been added. The software has been proved to be a more real simulation of the array storage system by experiment. It can be used as a simulation platform for disk array performance, reliability and array optimization.

【學(xué)位授予單位】：武漢紡織大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP333

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