SAN存储虚拟化关键技术的研究和设计(硕士论文)

SAN存储虚拟化关键技术的研究和设计

摘要

作为第四代存储技术

然而设备管理复杂程度连经验丰富的网络管理员都会感到棘手

由于SAN标准尚未制定完善虚拟化的标准也尚在制定之中

本文对比了简单SAN管理上的缺陷与不足

在明确了种种虚拟化概念之后

除了能进行基本磁盘资源的管理之外

使得主机能够像使用一块”大”的硬盘一样使用存储池的资源本文提出的解决方案本文的主要内容主要包括以下几个方面

对其存储分配的应用缺陷做了讨论

论述虚拟技术可以提供的优势

详细论述了虚拟存储技术的定义及其多种实现方式

提出了本文存储虚拟化开发方案选择

3.引入卷管理作为构建层次化存储池的基础

并且就逻辑卷管理和企业卷管理不同侧重点做了分析

对SAN管理软件进行扩展

关键词

Research and Design of Storage Virtualization in a SAN

ABSTRACT

As the fourth generation of storage technology, Storage Area Network provides high connectivity and scalability of network storage device. However, with hundreds of heterogeneous storage devices and hosts connected by networks, the consequent complexity of storage management confused even sophisticated network administrator. It's the complex problem of storage management in SAN that result in storage virtualization.

Today one of the most confused topics in IT industry is storage virtualization. Although "virtual" has already come up with such concepts as virtual memory, virtual display, and virtual tape in OS design many years ago. But as to what is storage virtualization, there is no clear and standard definition by far.

There is lack of standards for SAN since SAN technology is in the stage of early development, so does the storage virtualization. True storage virtualization development is in its embryo stage for most storage industrial vendors, although many of them acclaim their accomplishments in storage virtualization.

In this article, the deficiency and defects of plain SAN management have been pointed out and therefore together with advantages of storage management of virtualization. After clear description of many storage virtualization schemes in different aspects, a virtualization scheme is set up on the basis of former IP-SAN plain disk resource management system.

In addition to management of physical disks in SAN, this scheme could create hierarchical storage pool and enables application servers in SAN the ability of using pool as a very big local disk. Total SAN virtualization could involve many details of both software and hardware in SAN. The virtualization design provided in this article is an extension of original IP-SAN management software. The contents of this article include the following topics:

1.Analyze the difficulties of plain SAN management and discuss the

deficiency of storage distribution for application level. Compared with storage virtualization, many advantages in technology for storage application are described in detail.

2.Describe in detail the concepts of storage virtualization and its various

solutions from different aspects, such as what storage virtualization creates, where virtualization layer resides, and how it is implemented