Via The Register:
There are many ways to gang up machinery to scale applications on groups of servers or provide a measure of disaster recovery or fault tolerance for those applications. Supercomputer customers are known for spending big bucks on exotic technology, but they’re also notorious cheapskates. That’s why Linux and the clustering of commodity x86 servers took off a decade ago, essentially wiping out the market for vector supercomputers and nearly knocking out RISC architectures.
Read the full article here.