[Foundation-l] Back-up

[Yorian]

Hi everyone,

I am wondering for a while now how the Wikimedia-date is being 
back-upped. Of course there are many servers around the world, but do 
they all have all the Wikimedia data from all the projects? I believe 
not? Is there an extern computer (or computers) to which all the 
wikimedia data is uploaded, just to be safe? How is this arranged?

This question is asked just out of curiosity :)

Yorian