My point: nothing made by humans can guarantee 101% uptime. The main difference is how far any vendor will go to solve your problems. From my experience, IBM

My point: nothing made by humans can guarantee 101% uptime. The main difference is how far any vendor will go to solve your problems. From my experience, IBM will go to the far side of the moon and back in order to solve your problem. It will probably cost you in fees as much as buying a new car, but there's no luck of resources or resilience from their part. And I admire them for that. As much as we like to idolize the latest and greatest in this forum, the truth is that when it comes to mission critical equipment you need someone that you know will fly an expert from a different country in the middle of the night if they have to.