Not Ranked
We buy a lot of servers.. We very religiously replace them when they are 3-5 years old. With 300+ servers in our cage you can tell we stay busy replacing them. The old servers either get demoted from production to staging/development and in some slim cases they just get donated to the local school system or some other charity. But I easily spend 500k a year on replacement servers and assorted accessories such as Fiber HBA's. None of our servers have hard drives in them to cut down on the need to service them. All of them boot across a fiber SAN off of the central 3par storage, even the linux servers which for a long time were problematic when booting from SAN. I had to compile a special kernel so they could handle the multipath properly. Isn't technology fun.
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