It proposes the rule of three which guarantees video storage server to admit more users. This rule of three is based on disk system. The data blocks searched by a user is guaranteed in proportion to its velocity of playback in service period.

• 提出了基于磁盘系统的为保证视频服务器接纳更大数目用户的比例法,即保证在每个服务周期中为每个用户要求检索到的数据块的数目与其对应的回放速率成比例,这种算法能够保证得到支持多用户媒体回放的稳态性和迁移态连续性的要求。