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The grandparent does have a point when it comes to assigning blame; when you have a hardware-based solution then one can always blame the hardware manufacturer. If you use an open-source solution then there is typically no warranties, and then blame therefore falls upon whomever implemented the solution.

Management likes accountability so the above isn't going to change any time soon.

Now, obviously, the way around is to use enterprise-level solutions based on software. It is often more expensive than the hardware route, but as you say, there are plenty of vendors who do offer such solutions with a proper SLA.