In connection with the need of multiple heterogeneous platforms require to share disk space and provide a high performance read and write access of a large amount of data, this paper proposes a StorNext File System(SNFS)-based solution for building the high-performance data sharing system of the Chang’E-3 task ground application system. It expounds overall system architecture and implementation mechanism of data sharing and high performance read and write access to the heterogeneous platform, and focuses on how to specifically deliver key technologies such as achieving high-speed data read-write access, improving data read-write performance and reducing data read-write delays. System acceptance test and actual operational results show that the established data sharing system greatly improves the overall performance of the previous system and meets the Chang’E-3’s application needs to support the sharing and processing of more complicated and bigger data.%针对多种异构平台需要共享磁盘空间并提供大数据量高性能读写访问的需求，提出一种基于SNFS的嫦娥三号任务地面应用高性能数据共享系统。介绍该系统的总体架构，以及异构平台数据共享和高性能读写访问的实现机制，阐述实现数据高速读写访问、提高数据读写性能、降低数据读写延迟时间等关键技术的具体实现方法。对其进行多主机并发访问下数据读写性能的验收测试，运行结果表明，该数据共享系统较原有系统在整体性能上得到较大幅度的提升，能满足支持嫦娥三号任务业务更复杂、更大量的数据共享和处理的应用需求。
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