We’re still using Xserves, and thankfully two of them are the last revision. Unfortunately, one of those two got stuck booting the other day ((Pressed power, network lights would cycle every 5 seconds or so, but never got all the activity lights to cycle, etc)), and having dealt with this in the past, I knew LOM (Lights Out Management) can be the cause. So, I unplugged the server, and let it sit overnight. Next morning, it still wouldn’t boot.
So, I pulled the machine and tried in another location. It booted.
So the only thing I can figure is that LOM must get enough voltage/current over the network connections to keep it “alive”, and moving the machine disconnected that last lifeline.
So, moral: If LOM is being difficult, unplug power and network, and let things sit for a few minutes.
Silly LOM.
