Challenging research issues:
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Design of scalable SMP and MPP VOD architectures
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Balanced and scalable CPU processing power, internal bandwidth, disk I/O, and network I/O
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Data allocation procedures and performance impact
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Multistage buffering schemes
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Server management: data load, tertiary storage, hot cache
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Scalability evaluation of SMP and MPP architectures for VOD
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Criticality of server components performance for scalability and performance of entire system: simulation studies
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Distribution network architecture and performance issues
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System integration, cost, and maintenance issues
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