Design and Realization of Energy-Efficient Hybrid Magneto-optical Filing System

Abstract

Hierarchical hybrid filing system is a research hotspot in the field of data storage, and also is widely accepted in the industrial circle, which is widely used from personal storage to data center. This paper introduces an energy-efficient optical storage at a lower cost to solve the energy consumption problem of large data center, with an attempt to build a hybrid filing system comprised of array, online optical disk library and off-line optical disk library, discusses the guarantee mechanism of data consistency and the elastic design of system, and focuses on the research of the file caching and prefetching mechanism of hybrid magneto-optical filing system based on the read-write features of optical medium. Through experiments, the system is proved to be capable of effectively saving energy and maintaining the timeliness of data retrieval and query.