caa a22 4500 477132944 CHVBK 20180405111709.0 cr unu---uuuuu 170330e19970901xx s 000 0 eng 10.1007/s005300050063 doi (NATIONALLICENCE)springer-10.1007/s005300050063 Scheduling and data layout policies for a near-line multimedia storage architecture [Elektronische Daten] [Siu-Wah Lau, John C.S. Lui] Abstract.: Recent advances in computer technologies have made it feasible to provide multimedia services, such as news distribution and entertainment, via high-bandwidth networks. The storage and retrieval of large multimedia objects (e.g., video) becomes a major design issue of the multimedia information system. While most other works on multimedia storage servers assume an on-line disk storage system, we consider a two-tier storage architecture with a robotic tape library as the vast near-line storage and an on-line disk system as the front-line storage. Magnetic tapes are cheaper, more robust, and have a larger capacity; hence, they are more cost effective for large scale storage systems (e.g., video-on-demand (VOD) systems may store tens of thousands of videos). We study in detail the design issues of the tape subsystem and propose some novel tape-scheduling algorithms which give faster response and require less disk buffer space. We also study the disk-striping policy and the data layout on the tape cartridge in order to fully utilize the throughput of the robotic tape system and to minimize the on-line disk storage space. Springer-Verlag Berlin Heidelberg, 1997 Key words: Multimedia storage - Scheduling - Data layout nationallicence Lau Siu-Wah Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong, HK aut Lui John C.S. Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong, HK aut https://doi.org/10.1007/s005300050063 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005300050063 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lau Siu-Wah Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong, HK aut NATIONALLICENCE 700 1- Lui John C.S. Department of Computer Science and Engineering, The Chinese University of Hong Kong, Hong Kong, HK aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer