I remember I used to work in the nineties and early 2000 on local TV station, they had an Amiga VideoToaster system with a serial link to an A3000 that was in a tower using Scala InfoChannel. This setup was used to broadcast the channel logo/bug during daily transmissions and was the responsible for emitting the now not so common "Sorry, we are experiencing technical difficulties" and the pattern test with the channel name before and after transmissions.
At that time I used to talk quite a lot with the operator of that system and he showed me he had some kind of Amiga app running in the background that displayed, last time we met, that the uptime of the machine was seven years and something, running 24/7/365
I was truly amazed by it, I never thought any computer could achieve something like that!