Throughput-competitive admission control for continuous media databases
PODS '98 Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Strategic Replication of Video Files in a Distributed Environment
Multimedia Tools and Applications
Competitive on-line scheduling of continuous-media streams
Journal of Computer and System Sciences
Adaptive cycle management in soft real-time disk retrieval
Information Systems
Data placement and prefetching with accurate bit rate control for interactive media server
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
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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.