[Daviey]

It's essentially a PXE-boot diskless environment, what makes you think it is unusual and possibility of being unreliable?

[Brian_K_White]

What important things do you store only in ram? Why not? Isn't it reliable?

I think they just mean ephemeral.

[panick21_]

What is unusual is the firmware that they have.

[dangus]

I should say, unsuitable for certain use cases.

[johnklos]

I have servers which have literally been running non-stop for multiple years. Unless / until the kernel itself needs to be upgraded for security issues, and so long as backup power is good, they can run indefinitely.

[justapassenger]

Not a best setup to run database, yes. But stateless farm of servers that essentially forward the traffic for you? Not that much downsides.