As the system will work with sensors and support life of its wards, their health will depend on the work of the whole chain of components.
I am surely going to keep the main board in a safe place, like, put it in a moisture- and temperature-proof case, and isolate contacts where needed, but I understand that these boards are more for education/experiments than for real daily duty. Also, there always a factor of defectiveness in the board coming from the manufacturer.
So, I wonder, if there is information about how durable the boards are and if they are suitable for 24/7 work during weeks/months?
How do I make sure that system has some more or less definite margin of safety and know the moment when I should replace it with a new one?