Speaking from personal experience, using a Mac as a server or server-like contraption is quite an interesting proposition, as despite its Unix roots, the operating system isn't exactly designed for unattended, 24/7 usage and is difficult to set up and use as such — fighting words, but I stand by them. While most every user will reboot their Mac at least once in the space of a few weeks, if you happen to leave one running for precisely 49 days, 17 hours, 2 minutes, and 47 seconds, many parts will suddenly stop working as its TCP/IP networking stack dies.
Those are the findings of the folks at Photon, who did some serious sleuthing after encountering a mysterious issue in a fleet of Macs they use to monitor iMessage services. The problem revealed itself when some machines just up and stopped responding to network connections out of the blue, even though they answered ping requests with an "all good here, boss!"
