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SCI based scalable video on demand server

SCI based scalable video on demand server. Pascal Vandeputte Siemens Computer Systems. P. Vandeputte; Page 1. SCI Europe ‘99 - Toulouse 2/3 September 1999. Topics. Siemens Video on Demand activities Video on Demand scenario Streaming video, hardware and software constraints

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SCI based scalable video on demand server

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  1. SCI basedscalable video on demand server Pascal Vandeputte Siemens Computer Systems P. Vandeputte; Page 1 SCI Europe ‘99 - Toulouse 2/3 September 1999

  2. Topics • Siemens Video on Demand activities • Video on Demand scenario • Streaming video, hardware and software constraints • Building a Video on Demand Service • Small Video On Demand cluster prototype

  3. Siemens Vod activities • AMUSE Esprit project (Advanced Multimedia Services for residential Users) • Provide Server platform for VoD and WWW services for about 10 European field trials • Partners: Italtel, German Telecom, Italian Telecom, Swiss Telecom,Portuguese Telecom, Island Telecom, Siemens, Acorn, Videotime, ... • DAM Esprit project (DAVIC Accompanying Measures) • Provide a DAVIC compliant VoD Server • Partners: CCETT, Deutsch Telecom, Italtel, TF1, Matra, ... • Siemens NetVideo Product • Client /Server solution for streaming of video data within Intranets • SCI EUROPE Esprit project • Demonstrate feasibility of SCI cluster interconnect for high performance video server application • Build up phase 1 demonstrator using existing SCI technology • Build up phase 2 demonstrator using technology developed within the project

  4. http://…. html pages tv programs Multimedia PC Www server VCR commands Multimedia server Multimedia stream Set-top box Video on Demand scenario

  5. Video stream Network I/O module File Management VoD service architecture NetVideo Pump Client control process VCR commands Session and stream management Downstream Management

  6. Common MPEG streams

  7. Server Throughput

  8. Server RAID units

  9. Scheduling stream packets

  10. Building a VoD service Requirements • 500 MPEG2 5 Mbit/s clients (unicast) • At least 50 films online Hardware needs Sample configuration (only to have rough ideas): • Throughput • 1 client => 630 kbytes/s • 500 clients => 312 Mbyte/s throughput • Streams/ system • PCI32 bandwidth 100 Mbytes/s • 50 Mbytes/s disk (loading) => 3 x 20Mbytes/s RAID units / system • 50 Mbytes/s network (streaming) • 50 Mbytes/s div 630 kbytes/s => max 80 streams / system => at least 7 streaming systems • Disk size • 2 hour film => 4,4 Mbytes • 50 films => 220 Gbytes

  11. Monoliths vs. clusters Without clustering • 500 clients => 7 systems => 3 RAID units / system • 50 films online for each server => 220 Gbytes / system => 1540 Gbytes • Film database is 7 times duplicated • Increasing database size or clients is difficult and expensive With clustering • 500 clients => 7 systems => 3 RAID units / system • 50 films online for cluster => 220 Gbytes / cluster • no need to duplicate film database • Increasing database size or clients is easy and cheaper • High availability possible Clustering network bandwidth > 300 Mbytes/s => SCI 1 SCI board is cheaper than 220 Gbyte diskContent management is easier

  12. NetVideo cluster agents Client control NetVideo MediaServer 1 NetVideo Pump 1 NetVideo Manager NetVideo MediaServer 2 Client control NetVideo Pump 2 NetVideo MediaServer 3

  13. RAID5 40 Gbytes Small cluster prototype demo Client / Client Emulator Www server Gigabit Ethernet Client Control NetVideo Pump SCI NetVideo MediaServer NetVideo Manager

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