Hi Peter,

Adding to what others have mentioned.

Important to head a monitor around for those times you need to put a
head on your headless server :)

Every few years when my server has stopped for some reason, looking
at the screen has been important, first thing I've done for
unexpected things is to clean out the dust and check items like
thermal paste are still ok on the heatsink, reseat any PCI cards (two
NIC's) and replug leads etc. I also developed a habit of using
electrically safe contact grease.