Abstract: Main functions of storage sharing system are sharing heterogeneous data sources, data storage transparency and high-speed reading/writing data sources. This article centralizes the implementation of high-speed user-level storage sharing system, and proposes the architecture. The system has been realized based on SAN in an internal project. At last, the analysis of the performance of the middleware shows that the middleware has local storage system-like performance

Key words: Storage area network; Storage sharing; Library

摘要： 以SAN 异构存储共享系统的实现技术为核心，提出了一个基于SAN 的用户级应用型存储共享系统模型，无需改变开放系统内核，可利用开放系统的系统调用来优化磁盘I/O 性能，易于实现、维护和移植。详细描述了系统的设计思想和实现方法，并重点对动态库模块进行了研究。在与日本某大公司的合作项目中已实现了该系统，性能评测表明其具有接近于本地存储系统的性能。

关键词: 存储区域网；存储共享；动态库