Re: Label, label, label?
Plus many; the Brother "M-Touch" labels have that nasty tendency to detach themselves from where you put them when sitting in a data center environment after about 6 months.
When we were using the Dell Poweredge servers, I generally set the LCD display on the front to the host name. There is also an indicator light that is triggered by a button on front and back that blinks for the same reasons mentioned all over these comments; locate the machine in the front by the hostname, push the ID button, walk around back and look for the blinking LED. The Cisco UCS B chassis, blades, and C-series servers have similar.