"And like Cablevision, when 1000 users record the same program, Aereo creates 1,000 redundant copies."

I'm curious if they use some sort of filesystem that splits files into chunks, and stores similar chucks once, similar to what Dropbox does. Would this could as storing 1,000 redundant copies if the de-duplication is done at the file system level?

edit: After reading further, it appears that they do store duplicate copies of the file. I am curious how this type of de-duplication would work with the law.