A Disk Data Placement and Retrieval Scheme for Supporting Interactive Video-on-Demand
Chun-Hung Wen, Chih‐Yuan Cheng, Meng‐Huang Lee, Fu-Ching Wang, Yen‐Jen Oyang · 2007
This paper proposes a novel data placement and retrieval scheme based on a general two-level disk array architecture for designing interactive video-on-demand systems. The proposed scheme is of significance because the two-level disk array architecture exploits both parallelism and concurrency offered by fine-grain and coarsegrain disk array structures. Moreover, the execution of an interactive fast forward or backward search command will not disturb the original disk access scheduling and thus requires no extra disk bandwidth to perform fast forward and backward searches. 1 Introduction In recent years, the design of mass storage systems for multimedia applications has become an active research topic. One of the most important applications of multimedia storage systems is on-demand playback of video programmes or so-called video-on-demand [1, 2, 3, 4, 5, 6, 7]. In on-demand playback applications, the storage system supports concurrent retrieval of continuous video programs requested ...