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To calculate “common lifespan” they must embrace all drives, and never solely people who have already failed. It will even be extraordinarily helpful to know why they failed. Digital part failure? Mechanical failure? Head crashed into platter? Was it a defect in design or workmanship that’s widespread to all drives of the identical make and mannequin, or was it a defect these specific drives had that the majority drives of the identical make and mannequin didn’t have?
They admit that restricted information was supplied. I might go as far as to say that no conclusions could be drawn from the information they supplied, aside from anecdotal feedback from some technicians that “they do not make ’em like they used to”.
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