I've been looking into purchasing some switches for a new office fitout, and I notice that Netgear give their MTBF as 45 years (!).
How do they figure this out? Is this number meaningless? I assume they didn't get 1000 switches and run them for 45 years to see how many fail.
Given that an MTBF of 45 years is incomprehenable for this kind of device, is this number even worth paying attention to?