In this paper we first study intra-movie skewness through a trace-based analysis. It is proved that this skewness results in serious performance degradation of the video server with traditional round robin data placement. Then, according to the characteristics of intra-movie skewness, we propose a strategy, Symmetrical Pair Scheme to introduce our symmetrical data placement style, which has better load-balancing performance. Moreover, based on Symmetrical Pair Scheme we present a novel method, Symmetrical Replication Pair Scheme. Our analysis result shows that it can prevent the impact of intra-movie skewness and bring desirable load-balancing performance to parallel video servers.