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A couple of videos about distributed computing with direct reference on Google infrastructure.
You will get acquainted with:
--MapReduce the software framework implemented by Google to support parallel computations over large (greater than 100 terabyte) data sets on commodity hardware
--GFS and the way it stores it's data into 64mb chunks
--Bigtable which is the simple implementation of a non-relational database at Google
Cluster Computing and MapReduce Lectures 1-5.