Designing a Video on Demand Server
Video-on-demand (VoD) service will allow customers to request that certain movies or television shows be played on their television sets or computers immediately, giving individuals direct access to the materials stored in a video server. The goal of this project is to design a Video-on-Demand Server capable of performing to the following specifications:· Capacity - 25 feature-length movies · Serve 4 different movies simultaneously As previously discussed in the cost estimate, the Video on Demand (VoD) Server will be based on a multi-processor x86 architecture. The VoD server with all elements described in the cost estimate (excluding RAID level 4 support) will be implemented on the Windows NT operating system running on a 500MHz dual-processor Pentiumc III Xeon system with 512MB of memory. The configuration will consist of two Ethernet interfaces connected to an Ethernet switch on a T3 backbone, providing a peak network bandwidth of 30 Mbits/sec. Storage will consist of a set of four 18GB ULTRAWIDE SCSI-2 drives configured as a striped logical volume using standard Widows NT system too
In order to increase the bandwidth from the I/O subsystem, asynchronous I/O requests are issued. Thus, anticipated demands for data can be queued to disk so that the data is available when it is needed by the clients. This pre-fetching of data before it is needed results in seamless flow of data and the effect of jitter observed by the client. The methology of video data transport is a crucial factor in the efficiency of the system. Below I will discuss the following methods of video data transport and the method which I have selected to be used by the server.
Some common words found in the essay are:
Rate VBR, Windows NT, SYSTEM Currently, Disks RAID, Demand VoD, Servers Instead, Supplies UPS, Reservation Protocol, Servers Video, ARCHITECTURE Video, video server, vod server, push regime, pull model, video demand, video servers, server client, data transfer, vod client, data server, video data transport, stored video server, isochronous data ie, data ie data, fails clients served,
Approximate Word count = 2282
Approximate Pages = 9 (250 words per page double spaced)
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