一种新型的高性能计算机存储系统的研究与实现

STUDY AND IMPLEMENTATION OF A HIERARCHICAL STORAGE SYSTEM FOR HIGH PERFORMANCE

文中提出了一种改善计算机存储系统写请求特别是小写请求性能的新的存储结构．采用有着高存储速度、高可靠性的固态盘和廉价的硬盘空间共同作为磁光盘的写高速缓存，并结合顺序文件存取技术，从存储体系结构角度出发，研究并实现了一种以较低成本实现快速、可靠、大容量的存储系统．试验表明新型存储系统不必修改现有文件系统，即能大幅提高存储系统性能．系统可用于要求高可靠性的军用环境以及高可靠性和快速大容量要求的民用系统．

A novel hierarchical storage architecture called SSD HD MO is presented, which uses a small portion of a hard drive in a log structure format referred to as cache disk and solid state disk(SSD) technology on magneto optic (MO) to implement a high performance second storage system. SSD HD MO takes advantage of large data transfer sizes and uses inexpensive disk space to provide a low cost and reliable caching solution.Trace driven simulation experiments are carried out to evaluate the performance of the proposed disk architecture. Under the office/engineering work load environment, the SSD HD MO shows superb disk performance for writes as compared to the existing MO systems. Furthermore, SSD HD MO is very reliable and works at the device or device driver level. As a result, it can be applied directly to current file systems without the need of changing the operating system.