This paper have introduced the mirror of compact disk server, and compared with CD tower and CDROM database at all round. Detailed the predominance and application of the mirror of compact disk that apices in tbe library.

• 本文从多个角度对光盘镜像服务器、光盘塔、光盘库作了比较详细的对比分析，阐述了光盘镜像服 务器应用于图书馆的各种优势。