教程文件目录：
ucs讲座
|-- upgrading cisco ucs from release_1.4_to_2.0_c.mp4
|-- upgrading cisco ucs from release_1.4_to_2.0_b.mp4
|-- upgrading cisco ucs from release_1.4_to_2.0_a.mp4
|-- upgrading cisco ucs from release 1.31 to release 1.4 part 2.mp4