基于双扩展控制器的磁盘扩展柜的开发

发布时间：2018-03-07 05:27

本文选题：SAS　切入点：磁盘扩展柜　出处：《山东大学》2012年硕士论文　论文类型：学位论文

【摘要】：本文简要追溯了存储设备在近些年发展的一个历程。存储从计算机上的硬盘、光盘、软盘等等这样的存储设备发展到现在的硬盘柜、磁带机、磁盘阵列柜、NAS、SAN等等多种多样的大型存储设备,用了短短30年的时间。以SAS Controller-SAS Expander-SAS/SATA为基础的SAS磁盘连接技术作为存储设备的重要分支,在主流存储产品中已经得到了广泛的应用。近年来随着万兆IP网络的逐渐普及,这种IP SAN存储也进入了快速发展期。作者研究了以SAS Controller-SAS Expander-SAS/SATA为基础的SAS磁盘连接技术的实现方式,双扩展控制器的SAS磁盘扩展柜可靠性更高,对数据安全是一种更优的解决方案。双扩展控制器的SAS磁盘扩展柜的实现以双扩展控制器为核心,通过主控服务器端的存储控制器冗余,结合磁盘扩展器端的双扩展控制器的设计,实现存储数据的冗余,同时实现大容量数据存储。本文作者采用双扩展控制器磁盘扩展柜的系统设计和实现方法作为硕士研究生的研究课题。它采用了外部SAS线缆对SAS主控服务器和磁盘扩展柜进行连接,通过双扩展控制器对SAS信号进行扩展,采用的是LSI公司的SAS6G的SAS2X36扩展控制器。它的实现流程如下：首先,主控服务器端作为SAS信号的产生端,将冗余的4对SAS差分信号对连接到磁盘扩展柜端,磁盘扩展柜通过冗余的扩展芯片,将4对SAS差分信号对扩展为32对SAS差分信号对,这些信号经过设计,分别连接硬盘以及下一级的磁盘扩展柜。其次,扩展柜通过热拔插和冗余设计来实现高可靠性要求。最后,实现磁盘扩展柜的管理功能,主要包括硬盘的指示功能、风扇调速功能、故障报警功能等。本文设计与实现的双扩展控制器磁盘扩展柜,具有冗余性、热拔插功能、数据安全性,硬盘读写速度高、级联磁盘扩展柜数量多。
[Abstract]:This paper briefly traces the development of storage devices in recent years. Storage from the hard disk, optical disk, floppy disk and other storage devices on the computer to the current hard disk cabinets, tape drives, etc. A variety of large storage devices, such as SAS Controller-SAS Expander-SAS/SATA and so on, have been used for a short period of 30 years. SAS disk connection technology based on SAS Controller-SAS Expander-SAS/SATA is an important branch of storage devices. It has been widely used in mainstream storage products. In recent years, with the increasing popularity of multi-megabit IP networks, this kind of IP SAN storage has also entered a period of rapid development. The realization of SAS disk connection technology based on SAS Controller-SAS Expander-SAS/SATA is studied. The SAS disk extension cabinet with double extension controller is more reliable, and it is safe for data. A better solution. The realization of SAS disk expansion cabinet based on dual extension controller is based on dual extension controller. The redundancy of storage controller in main control server and the design of dual extension controller on disk expander are introduced. The redundancy of storage data is realized, and the large capacity data storage is realized at the same time. In this paper, the author adopts the system design and implementation method of double expansion controller disk expansion cabinet as the research topic of master graduate student. It uses external SAS cable to connect the main control server of SAS and the disk extension cabinet. The SAS signal is extended by dual extension controller, and the SAS2X36 extension controller of SAS6G of LSI Company is adopted. Its implementation flow is as follows:. First of all, the main control server is used as the generator of SAS signal. The redundant 4 pairs of SAS differential signal pairs are connected to the disk extension cabinet. The four pairs of SAS differential signal pairs are expanded into 32 pairs of SAS differential signal pairs. These signals are designed to connect the hard disk and the next stage disk expansion cabinets respectively. Secondly, the expansion cabinets are designed to achieve high reliability requirements through hot plug and redundant design. The management function of the disk expansion cabinet is realized, including the indication function of hard disk, the speed regulation function of fan, the fault alarm function and so on. This paper designs and implements a dual expansion controller disk expansion cabinet with redundancy, hot plug function, data security, high speed of hard disk reading and writing, and a large number of cascaded disk expansion cabinets.
【学位授予单位】：山东大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP333

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