Apple's default icon for a Windows server has the BSOD on a CRT.
@th Been like that since macOS (back then Mac OS X) 10.5 if I recall correctly :)
@th Is the mouse pointer turning into a "bomb" still a thing on Apple?
What you mean was a hard lockup, most often related to system extensions. Basically the equivalent to a Bluescreen or Kernel Panic. This showed a dialogue box with a bomb icon and a restart button. It was a thing in classic Mac OS, meaning before Mac OS X was released over 20 years ago.
(I will now get cancelled for mentioning that macOS <10 was about as unreliable as Windows <NT but worse at providing diagnostics.)
@th fun fact, if you set _device-info._tcp in your zeroconf/avahi smb service broadcast to "model=RackMac", it will show up as a rackmount xserve.