Dxtory is a movie capture tool for DirectX and OpenGL Applications. Since data is directly acquired from a surface memory buffer, it is very high-speed and works with small load. The first bottleneck of the high-bitrates capture is a writing speed to storage. If it is environment with two or more storage, writing-speed can be improved using this function. There is no necessity of using a special file system. Make multiple selection of the folder which saves data, and preparation will be completed if speed setting is done.