France VPN neighborhood

and reports the result to the ISP's management server. Theplacement generator then generates a new placement basedon the existing placement. Because the placement algorithmtries to evenly distribute chunks for each movie, some chunksfrom existing nodes move to the new node. This reshufflingis already minimized by the placement algorithm and can beaccommodated by the excess capacity in the local networkwhen it is not being used. As a result of this movement, eachnode now has some empty space which the system fills withthe next most popular content. Previously, this content was notavailable in the France VPN neighborhood, so it has to come from the ISP.The total amount of data transfer from existing nodes tothe new node using local connectivity (MoCA and wireless)is 579GB, requiring 13.2 hours to transfer. The amount of newcontent from the ISP is 950GB, which requires approximately9 days to transfer via a single 10Mbps broadcast channel.D. Sensitivity Analysis and Abnormal BehaviorSo far we have focused on addressing the first orderchallenges in designing a neighborhood network VoD system.However, there are additional problems that need to be considered in deploying such a system. In particular, we providesensitivity analysis with varying level of connectivity and diskspace, compare the performance of our approach with that ofother solutions, and address abnormal events such as flashcrowd events using a small on-demand cache. Detailed resultsare presented in the extended technical report [23].