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16. Server Hardware > Multiple Busses

Multiple Busses

Servers usually have separate busses for L2 cache, I/O, RAM, and peripherals. This reduces contention and allows the use of appropriate hardware for each bus. Server busses may be packet switched, in the sense that a request is made over the bus and the bus is released until the response is ready, allowing requests to be interleaved with responses and improving throughput. Bus throughput is critical for servers, because a great deal of what a server does is simply copy data between network devices and storage devices.


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