云架构大容量高带宽硬盘设计

发布时间：2018-04-04 00:20

本文选题：存储器　切入点：云架构　出处：《太原理工大学》2015年硕士论文

【摘要】：存储器作为一种信息存储部件，是所有电子计算机系统的重要组成部分，其性能直接影响整个电子计算机系统性能。一直以来存储容量和访问带宽都是评价存储器性能好坏的两个重要指标，存储容量扩大、访问带宽提升是如今存储器发展的趋势。单个硬盘、单片内存芯片受制于工艺水平，其性能提升十分有限。目前内存采取多片芯片堆叠连接的方法来提升性能，多片芯片既可以用于扩展内存的地址位，又可以用于扩展数据位，当用于扩展地址位时可以实现存储容量的成倍扩大，当用于扩展数据位时可以在实现容量扩大的同时实现访问带宽的提升。而目前硬盘大多采用独占总线带宽的点对点连接方式，这种连接方式非常不适合堆叠连接，使得硬盘容量的扩大和带宽的提升十分不方便。云是网络上基于虚拟化资源的并行处理，本文将云架构引入硬盘的设计，，以实现硬盘结点的并行处理，从而完成对硬盘容量的扩大与带宽的提升。首先构建了一种可堆叠连接的SATA硬盘，用作存储的虚拟化资源结点，有效地解决了硬盘堆叠连接困难的问题；然后从以太网特征抽象出只写总线BoW和统一结点接口UNI，任何设备或端口必须通过UNI连接到只写总线BoW，由UNI负责设备或端口之间无差错地传输消息，从而建立了一种存储的网络架构；m个SATA硬盘结点通过UNI挂接到BoW总线上形成单路堆叠连接SATA硬盘，单路堆叠连接SATA硬盘可实现m倍的存储容量扩大，一个由n路堆叠连接SATA硬盘构成的大容量高带宽硬盘在实现m×n倍容量扩大的同时，可以实现n倍带宽提升。系统以SATA硬盘为存储介质结点，用1片Xilinx公司的Zynq-7045芯片和10片Marvell公司的88SE9235芯片搭建。每片88SE9235连接4个SATA硬盘形成1路硬盘，各路硬盘通过PCIe接口连接到Zynq-7045上形成一个具有40个硬盘结点的大容量高带宽硬盘，在容量扩展同时实现带宽提升。系统设计了传输速率达12.5Gb/s的下一代SATA接口作为对外主机接口，同时设计了1个万兆以太网接口来提供系统网络接入能力。
[Abstract]:As an information storage component, memory is an important part of all computer systems, and its performance directly affects the performance of the whole computer system.Storage capacity and access bandwidth are two important indexes to evaluate memory performance. The expansion of storage capacity and the improvement of access bandwidth are the trends of memory development.Single hard disk, single memory chip is subject to the process level, its performance improvement is very limited.At present, multi-chip stacking connection is used to improve the performance of memory. Multi-chip chips can be used to expand memory address bits and data bits, and the storage capacity can be multiplied when used to expand address bits.When used to expand data bits, access bandwidth can be increased while capacity is expanded.At present, the hard disk mostly adopts the point-to-point connection mode which has exclusive bus bandwidth. This connection mode is not suitable for stacking connection, which makes the expansion of hard disk capacity and the enhancement of bandwidth very inconvenient.Cloud is the parallel processing based on virtualized resources on the network. In this paper, the cloud architecture is introduced into the design of hard disk to realize the parallel processing of hard disk nodes, so as to achieve the expansion of hard disk capacity and the enhancement of bandwidth.Firstly, a stacked SATA hard disk is constructed, which can be used as a storage virtual resource node, which effectively solves the problem of hard disk stacking connection.Then the write-only BoW and the unified node interface (Uni) are abstracted from the Ethernet features. Any device or port must be connected to the write-only bus BoW via UNI, and the UNI is responsible for transmitting messages between devices or ports without error.Thus, a storage network architecture named SATA hard disk node is established, which is connected to the BoW bus by UNI to form a single stack connection SATA hard disk. The single stack connection SATA hard disk can achieve m times the storage capacity expansion.A large capacity and high bandwidth hard disk composed of n-channel stacked and connected SATA hard disk can realize the expansion of m 脳 n times capacity and the increase of n times bandwidth at the same time.The system takes SATA hard disk as storage medium node, and uses one Zynq-7045 chip of Xilinx Company and 10 88SE9235 chips of Marvell Company.Each 88SE9235 connects 4 SATA hard disks to form a hard disk. Each hard disk is connected to the Zynq-7045 by PCIe interface to form a large capacity high-bandwidth hard disk with 40 hard disk nodes. The bandwidth is enhanced at the same time of capacity expansion.The next generation SATA interface with transmission rate up to 12.5Gb/s is designed as the external host interface, and a Gigabit Ethernet interface is designed to provide the system network access capability.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP333.35

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