An online video placement policy based on bandwidth to space ratio (BSR)
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Tertiary storage in multimedia systems: staging or direct access?
Multimedia Systems
ADC '01 Proceedings of the 12th Australasian database conference
Performance Measurements of Tertiary Storage Devices
VLDB '98 Proceedings of the 24rd International Conference on Very Large Data Bases
Design and Development of a Stream Service in a Heterogenous Client Environment
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
Constructing a video server with tertiary storage: practice and experience
Multimedia Systems
Deterministic load-balancing schemes for disk-based video-on-demand storage servers
MSS '95 Proceedings of the 14th IEEE Symposium on Mass Storage Systems
Modeling and Dimensioning Hierarchical Storage Systems for Low-Delay Video Services
IEEE Transactions on Computers
IBM Journal of Research and Development - Papers on mustimedia systems
Time-varying management of data storage
HotDep'05 Proceedings of the First conference on Hot topics in system dependability
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Video-on-demand is a new entertainment service that will soon be widely available. A small amount of material is very popular, while large amounts of material are viewed less frequently. This skew can be exploited by using a storage hierarchy, storing the less frequently viewed videos in lower-cost tertiary storage. This paper studies the use of tertiary storage for videos. Tertiary storage devices such as optical disks and magnetic tapes can be used to a) deliver data directly to viewers, or b) to stage data to disk for viewing. Analysis of these modes yields guidelines for server design. Examining device characteristics, workload characteristics, and cost, the two modes are compared to each other and to playing from disk. The data placement decision depends on the fraction of time a stream of a video is active. At current costs, videos having an active stream less than a third of the time should reside on tertiary storage. When a tertiary library has a much higher data rate than the video rate, videos should be staged disk for playing. Otherwise, they should be played directly from tertiary store.