Optmization tool for VoD server placement will be one of the topics for the MSIN Summer Projects. This work will be done by Gonçalo Pereira with the supervision of Prof. Amaro de Sousa from UA.
Motivation for the project:
A video-on-demand system is composed by multiple video servers and a Head-End system, where the client connects for identification. Whenever a movie is selected for provision, the front-end system redirects the request to one of the video servers where it is available. Each available movie is at one or more video servers, which has a maximum number of stored movies (limited by its storage capacity) and a maximum number of movies that can be provisioned (limited by the bandwidth of its connection to the network).
For an optimal video provision, all video servers would have a copy of each movie. However, this would lead to extreme storage capacity servers. For an optimal video server storage, all movies would exist in a single server. However, this would lead to poor video provision performance (many video requests not been satisfied). Much more interesting is if the front-end can relate the request client position on the network with the server position on the network. If the server which gives the shortest routing path to the client is selected, the overall performance of the system will be optimized with respect to the network resource utilization. A further problem is related with the problems associated with ICC servers, and their location/operation in the whole architecture.
This work aims:
a) to develop a tool to plan and define the optimal location and size of some of the VoD servers
b) Considering also the location of the ICC servers, taking in consideration the existing ICC usage patterns.
c) Define the movie assignment and distribution algorithms deployed in the network, under which the tool will define the location of the above boxes.
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