Title :
A hierarchical network storage architecture for video-on-demand services
Author :
Lin, Ying-Dar ; Lai, Homg-Zhu ; Lai, Yuan-Cheng
Author_Institution :
Dept. of Comput. & Inf. Sci., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
Recent advances in cable TV networks and multimedia technologies open the possibilities for network/service/content providers to offer residential customers with video-on-demand services. However, the mass storage system in supporting such services demands proper organization and management. We present a three-level hierarchical network storage architecture for the video-on-demand storage system. At the first-level (local service center, LSC) a limited number of programs with high viewing probabilities are stored while at the second-level (local central service center, LCSC) a few programs with second high viewing probabilities are stored. The third-level (central service center, CSC) contains all programs provided in the system. Based on this architecture and the program viewing probability distribution function, we use a minimum-cost function to find out the number of programs stored in the two service centers (LSC and LCSC) and the number of links among these three service centers. We also describe two program reallocation algorithms which swap programs between service centers according to the change in user request patterns
Keywords :
cable television; interactive video; multimedia communication; probability; storage management; cable TV networks; central service center; content providers; hierarchical network storage architecture; local central service center; local service center; mass storage system; minimum-cost function; multimedia technologies; network providers; program reallocation algorithms; program viewing probability distribution function; residential customers; service providers; storage management; video-on-demand services; Bandwidth; Cable TV; Computer architecture; Computer networks; Costs; Information science; Multimedia systems; Network servers; Probability distribution; Spine;
Conference_Titel :
Local Computer Networks, 1996., Proceedings 21st IEEE Conference on
Conference_Location :
Minneapolis, MN
Print_ISBN :
0-8186-7617-5
DOI :
10.1109/LCN.1996.558164