Animation with small boxes that shuffle into position

I need a short animation. See the attached pic with Start and End.
The big rectangles are servers. Use the blue color in the attached cloubrain logo.
The small boxes are contained in the big rectangle. Use the orange color in the cloubrain logo.
The first frame is like the start image. Move the small boxes until they have shuffled into the End position. It should take 10-20 seconds. Whatever you think feels write in that range. This short video will be embedded in a webpage.
See dropbox.com. Make the video about that size.