OT Googles cluster architecture

This is off topic as far as oracle goes, however we are all interested in storing and querying data. Here is a pdf on how Google is doing it. Apparently they are using 15000 "comodity class" pcs in cluster architecture.

It dosnt look like they are using Oracle, but seems to be a file based system.(index.shards)
Pretty interesting stuff.

Have a good weekend all!

http://www.computer.org/micro/mi2003/m2022.pdf

"

Amenable to extensive parallelization, google's web search application lets different queries run on different processors and, by partitioning the overall index, also lets a single query use multiple processors. to handle this workload, google's architecture features clusters of more than 15,000 commodity-class pcs with fault-tolerant software. this architecture achieves superior performance at a fraction of the cost of a system built from fewer, but more expensive, high-end servers.
"

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