YouTube storage design and implementation

I'm current开发者_Python百科ly researching the architecture behind YouTubes storage and I'm looking for sources of information on that subject but I'm having difficulty finding references to that subject so I'm wondering if some of you might have intel on that subject :)

I'm pretty sure it's BigTable on GFS now.

http://en.wikipedia.org/wiki/BigTable

http://en.wikipedia.org/wiki/Google_File_System

more info here http://highscalability.com/youtube-architecture

For such info I depend on High Scalability. You can browse thru this

http://highscalability.com/youtube-architecture.

Needless to say its not an exhaustive description.