【摘要】：虛擬磁帶庫，該技術概念早在十多年前就已經(jīng)出現(xiàn)，但一直沒有被普遍使用。直到最近幾年，，磁盤系統(tǒng)的成本越來越低，可靠性越來越高，業(yè)界開始越來越多的使用這個技術。這個技術逐漸成為行業(yè)未來的發(fā)展方向。 隨著計算機技術的快速發(fā)展，政府日�；顒铀a(chǎn)生的系統(tǒng)數(shù)據(jù)日益增多，因此，數(shù)據(jù)備份量也就不斷增長,現(xiàn)有的自動磁帶庫已經(jīng)無法滿足需求，因此，政府容災備份系統(tǒng)的性能的提高就變得迫在眉睫，舊有的機械磁帶庫已經(jīng)無法勝任這種任務，政府電子政務系統(tǒng)需要的是接近于在線存儲的方式進行數(shù)據(jù)備份，而物理磁帶庫只能滿足離線存儲的設計要求，因此，如何提高政府電子政務系統(tǒng)在崩潰時的數(shù)據(jù)恢復能力和數(shù)據(jù)備份水平就成了整個系統(tǒng)改造的核心工作。 在本課題的研究過程中，虛擬磁帶庫系統(tǒng)結構是一個三層結構,分別是主機層、虛擬帶庫層和自動磁帶庫層�；谌龑蛹軜嫷奶摂M磁帶庫容災系統(tǒng)在傳統(tǒng)的兩級備份架構中增加了虛擬帶庫層，虛擬帶庫層其實是一個近線存儲層，該層的特點是數(shù)據(jù)備份速度近似于在線存儲，而設備價格又接近離線海量存儲，本文通過對現(xiàn)有電子政務系統(tǒng)的深入研究，對政府電子政務容災系統(tǒng)的發(fā)展現(xiàn)狀進深入分析，對其在現(xiàn)有條件下應用中表現(xiàn)出的不足之處以及現(xiàn)有系統(tǒng)的海量數(shù)據(jù)存儲的核心技術等方面進行深入研究分析，最后總結了電子政務系統(tǒng)基于VTL的容災系統(tǒng)的預期效果以及整個系統(tǒng)的改造目標，從而進一步驗證了虛擬磁帶庫技術在容災系統(tǒng)的應用相對于物理磁帶庫的優(yōu)勢。 本課題研究的政府容災系統(tǒng)是在傳統(tǒng)兩層的備份體系結構中加入虛擬磁帶庫后，主機和備機的災難互備系統(tǒng)的恢復點目標控制在兩分鐘內，即在兩分鐘內實時地備份主機系統(tǒng)業(yè)務信息中的每一個數(shù)據(jù)操作事務，在最大程度上減免了數(shù)據(jù)的丟失。從根本上達到了災難自動恢復的機制要求,保證了數(shù)據(jù)恢復時間指標控制在兩小時內，因此，即使出現(xiàn)災難或者意外狀況，主機數(shù)據(jù)都可以實現(xiàn)在兩個小時內從備機恢復，以保證備機的正常運行。 虛擬磁帶庫技術是近些年來發(fā)展起來的適用于海量數(shù)據(jù)備份的新型技術，虛擬磁帶庫技術在容災系統(tǒng)的應用尤為突出，它具有備份速度快，數(shù)據(jù)恢復時間短的特性，主要備份領域，克服了傳統(tǒng)的物理磁帶庫的缺點,對數(shù)據(jù)備份存儲領域的發(fā)展具有重大意義。
[Abstract]:Virtual tape library, the concept of this technology has been around more than a decade ago, but has not been widely used. Until recently, the cost and reliability of disk systems were getting lower and higher, and the industry began to use the technology more and more. This technology is gradually becoming the future development direction of the industry. With the rapid development of computer technology, the system data generated by the daily activities of the government is increasing day by day. Therefore, the amount of data backup is also increasing, and the existing automatic tape library can no longer meet the demand. It is urgent to improve the performance of the government disaster recovery backup system. The old mechanical tape library is no longer competent for this kind of task. What the government e-government system needs is data backup in a way close to online storage. The physical tape library can only meet the design requirements of off-line storage. Therefore, how to improve the ability of data recovery and the level of data backup in the collapse of government e-government system becomes the core task of the whole system reform. In the course of this research, the virtual tape library system structure is a three-layer structure, which is the host layer, the virtual tape library layer and the automatic tape library layer. Virtual tape library disaster recovery system based on three-layer architecture adds virtual tape library layer to the traditional two-level backup architecture. Virtual tape library layer is actually a near-line storage layer. The characteristic of this layer is that the speed of data backup is similar to that of online storage. And the equipment price is close to off-line mass storage. Through the in-depth study of the existing e-government system, this paper makes a deep analysis of the development status of the government e-government disaster recovery system. The shortcomings of its application under the existing conditions and the core technology of mass data storage in the existing system are deeply studied and analyzed. Finally, the paper summarizes the expected effect of the disaster recovery system based on VTL and the reform goal of the whole system, which further verifies the advantage of the virtual tape library technology in disaster recovery system compared with the physical tape library. The government disaster recovery system studied in this paper is to add virtual tape library to the traditional two-tier backup system structure, and the recovery point of the disaster mutual backup system of host and standby machine is controlled within two minutes. In other words, every data operation transaction in the business information of the host system can be backed up in two minutes in real time, and the loss of data is reduced to the greatest extent. It basically meets the requirements of the mechanism for automatic disaster recovery and ensures that the data recovery time index is controlled within two hours. Therefore, even if a disaster or an accident occurs, the host data can be recovered from the standby machine within two hours. To ensure the normal operation of the standby machine. Virtual tape library technology is a new technology suitable for mass data backup developed in recent years. The application of virtual tape library technology in disaster recovery system is particularly prominent. It has the characteristics of fast backup speed and short data recovery time. The main backup field overcomes the shortcomings of the traditional physical tape library and is of great significance to the development of the data backup storage field.
【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TP309.3;TP333.35

【參考文獻】

相關期刊論文 前7條

1 何寧,熊劍平,蔣昌龍;高速數(shù)據(jù)傳輸接口—光纖通道[J];電訊技術;2001年01期

2 王芳;曾令仿;馮丹;夏鵬;;可快速響應的虛擬三級存儲系統(tǒng)RAT[J];華中科技大學學報(自然科學版);2005年S1期

3 葉衛(wèi)東 ,曾哲昱;SCSI技術及其接口設計方法[J];測控技術;2002年03期

4 李長和,施亮,吳智銘;基于Linux的NAS系統(tǒng)的設計與研究[J];計算機工程;2002年07期

5 馮丹,袁圣權,張江陵;磁盤陣列附網(wǎng)存儲技術的研究[J];計算機工程;2002年10期

6 謝長生,李書成;SAN互聯(lián)新技術——InfiniBand[J];計算機工程;2003年20期

7 蔡皖東;基于SAN的高可用性網(wǎng)絡存儲解決方案[J];小型微型計算機系統(tǒng);2001年03期

相關重要報紙文章 前1條

1 王琰;[N];中國計算機報;2002年

相關博士學位論文 前1條

1 吳濤;虛擬化存儲技術研究[D];華中科技大學;2004年

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