基于负载分类的实时嵌入式网络化NAND闪存存储系统及分析方法

项目名称： 基于负载分类的实时嵌入式网络化NAND闪存存储系统及分析方法

项目编号： No.61272123

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 自动化技术、计算机技术

项目作者： 张延园

作者单位： 西北工业大学

项目金额： 80万元

中文摘要： 随着嵌入式应用的不断发展，嵌入式系统对网络化实时存储的要求越来越迫切要求。大容量闪存存储和交换式实时网络技术的发展为实现这一目标奠定了重要基础。然而，现有闪存管理机制采用的单一管理算法模式不能满足异构负载类型对实时性的不同要求；复杂的网络存储体系结构与协议难以部署在能力差异极大的嵌入式节点上；由于调度单位不同，现有实时网络的实时调度与验证机制无法直接用来保障存储数据流的实时性要求。为解决上述问题，本课题申请提出构建轻量级网络存储架构，避免构造复杂存储协议和重量级架构；提出对闪存管理算法的实时性分析技术，设计可区分负载类型独立管理的闪存管理机制；以实时网络分析与调度技术为基础，设计适用于实时存储的分析方法和调度管理技术。基于上述技术，本课题将构造原型系统和仿真环境，对关键技术进行理论分析和仿真试验验证。

中文关键词： 闪存存储；网络化实时系统；嵌入式系统；；

英文摘要： With the advance of embedded applications, embedded systems require more powerful real time network storage capability. Although mass flash memory storage and real time switch network could be used to build such systems,they could not achieve the goal by themselves: (1)current flash memory management layer is designed to adopt single management algorithm. Designers wish the algorithm to be able to adapt to more than one situations. However, this could not be achieved in embedded systems with lots of heterogenous storage accessing workloads with real time constraints. (2)current network storage architectures and protocols are too complex to be deployed upon a set of embedded nodes with very different ability. (3)because real time storage and real time switch network have different unit to schedule, techniques adopted to guarantee and verify real time constraints in real time switch network could not be used for real time storage without modification. To solve the first problem, we propose to build a lightweighted network storage architecture to avoid current complex archtiecture and protocols of storage. To solve the second problem,we propose to introduce a domain based flash memory management framework which could adopt different algorithms for different style of workloads and to analyze the real time features o

英文关键词： NAND flash Storage；networked real time system；embedded system；；