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Novasky : Cinematic-Quality VoD in a P2P Storage Cloud

Novasky : Cinematic-Quality VoD in a P2P Storage Cloud. Outline. Introduction Design Measurement and evaluation conclusion. Introduction. Novasky. Introduction. Storage cloud Peers are inter-connected over high-bandwidth network storage space is reserved in each peer

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Novasky : Cinematic-Quality VoD in a P2P Storage Cloud

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  1. Novasky: Cinematic-Quality VoD in a P2P Storage Cloud

  2. Outline • Introduction • Design • Measurement and evaluation • conclusion

  3. Introduction

  4. Novasky

  5. Introduction • Storage cloud • Peers are inter-connected over high-bandwidth network • storage space is reserved in each peer • pool storage spaces together • storage space can be accessed conveniently • design, implement, deploy, and measure a VoD system based on P2P storage cloud

  6. Design

  7. Objective and Challenge • Objectiv • Build a P2P storage cloud • Cinematic-quality • Challenges • Replacement • Demand and Supply • Solution • coding-aware peer storage and replacement strategy • adaptive server push strategy

  8. Architectural Design Management center : 1)Maintain metadata 2)Authentication 3)Maintain current status of peers

  9. Architectural Design Media servers: feed a rich repository of videos to a large number of users

  10. Architectural Design P2P storage cloud: 1) pool local storage space together 2) organized into a mesh topology 3) exchange information periodically

  11. Peer Storage and Replacement • Three aspects to consider • cache a number of videos • Uploading a certain part of video • Replication • Store a part of the video and promote diversity

  12. 缓存饱和时 按最不常用顺序进行排序 生成编码的片断并保存 删除视频源文件

  13. Reed-Solomon codes for segment

  14. Measurement and Evaluation

  15. Durable video availability

  16. Durable video availability

  17. Storage efficiency

  18. Load balancing

  19. Cost effectiveness of the server push-to-peer strategy

  20. Cost effectiveness of the server push-to-peer strategy

  21. Cost effectiveness of the server push-to-peer strategy

  22. Transmission overhead

  23. CPU and memory consumption

  24. conclusion

  25. conclusion • Design and implement Novasky • Propose two unique mechanism • Coding-aware peer storage and replacement strategy • Adaptive server push strategy • Offer insights which are helpful towards future designs of P2Pstorage cloud systems

  26. Thanks

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