Architectures and algorithms for on-line failure recovery in redundant disk arrays
Distributed and Parallel Databases - Special issue on disk arrays
Distributed schedule management in the Tiger video fileserver
Proceedings of the sixteenth ACM symposium on Operating systems principles
The interactive performance of SLIM: a stateless, thin-client architecture
Proceedings of the seventeenth ACM symposium on Operating systems principles
Multimedia servers: applications, environments, and design
Multimedia servers: applications, environments, and design
Modeling and Performance Comparison of Reliability Strategies for Distributed Video Servers
IEEE Transactions on Parallel and Distributed Systems
Data striping and reliability aspects in distributed video servers
Cluster Computing
Analytic Modeling and Comparisons of Striping Strategies for Replicated Disk Arrays
IEEE Transactions on Computers
Automatic Generation of Availability Models in RAScad
DSN '02 Proceedings of the 2002 International Conference on Dependable Systems and Networks
Data Storage and Retrieval for Video-on-Demand Servers
MSE '02 Proceedings of the Fourth IEEE International Symposium on Multimedia Software Engineering
A Multicast Delivery Scheme for VCR Operations in a Large VOD System
ICPADS '01 Proceedings of the Eighth International Conference on Parallel and Distributed Systems
Modeling the Caching Effect in Continuous Media Servers
Multimedia Tools and Applications
Computer Organization and Design
Computer Organization and Design
Caching and Scheduling in NAD-Based Multimedia Servers
IEEE Transactions on Parallel and Distributed Systems
Guest Editors' Introduction: Approaches to Recovery-Oriented Computing
IEEE Internet Computing
Resource consumption-aware QoS in cluster-based VOD servers
Journal of Systems Architecture: the EUROMICRO Journal
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Due to the economic cost and good scalability, cluster-based server architecture is used for VOD services. This server consists of a front-end node and multiple backend nodes. In this server architecture, backend nodes are added simply to support large-scale on-demand clients. However, as the number of backend nodes increases, the possibility of backend node failure also increases. A backend node fault not only degrades the quality of serviced streaming media but also decreases the number of streams supported in the VOD server. For successful VOD service, even if a backend node enters a fault state, the streaming service in progress should be re-continued after a short recovery time. As the recovery strategy, when legacy RAID methods are applied to cluster-based VOD servers, the excessive internal network traffic between the backend nodes causes performance degradation. In addition, the backend nodes demonstrate inefficient CPU utilization for the recovery process. In this paper, to address these problems, a new fault recovery strategy is proposed based on the pipeline computing concept. The proposed method not only distributes the network traffic generated from the recovery operations but also makes efficient use of the CPU time available in the backend nodes. Based on these advantages, even if the cluster-based server has a backend node that fails, the proposed method provides more QoS streams compared to the existing recovery method. In addition, since the proposed method needs a very short recovery time, the streaming services in progress are sustained without degradation of media quality.