Tomasz Ganicz, 27/08/2012 13:27:
Detailed information regarding Wikimedia Foundation's server's and network can be found here:
Which is completely useless for any kind of high-level information, in particular [[Server roles]] which is dead and has no replacement and https://meta.wikimedia.org/wiki/Wikimedia_servers is outdated. But you might dig http://wikitech.wikimedia.org/view/Presentations , it's also possible that some Wikimania presentations have been added already.
Nemo