A Video-on-Demand (VOD) server needs to store hundreds of movie titles and to support thousands of concurrent accesses. We define access profile as the number of concurrent accesses to each movie title that should be supported by a VOD server. A current high-end magnetic disk array (disk) can only support tens of MPEG-2 concurrent accesses, and it is necessary to replicate and/or stripe the hot movie files over multiple disk arrays. How to replicate, stripe, and place the movie files over a minimum number of magnetic disk arrays such that a given access profile can be supported is an important problem. In this paper, we formulate and solve this problem. The result of this study can be applied to the design of the storage subsystem of a VOD server to economically minimize the cost or to maximize the utilization of disk arrays.
|Original language||English (US)|
|Number of pages||4|
|State||Published - Jan 1 1996|
|Event||Proceedings of the 1996 International Conference on Multimedia Computing and Systems - Hiroshima, Jpn|
Duration: Jun 17 1996 → Jun 23 1996
|Other||Proceedings of the 1996 International Conference on Multimedia Computing and Systems|
|Period||6/17/96 → 6/23/96|