I work overnight reel-to-reel tape backup in the day, having to hand wind the tape over the head and onto the the new reel. We had to stay at the console for two critical tasks - Press Y to start the backup verification (~2hrs into the process) - Make sure the printer stays online as all the standard out went to the printer, and without that the backup would fill the buffer and hang. The printers used steel print bands with the alphabet printed on them 5 or 6 rows high with letters shifted a few characters on each line allowing the band to spin and the heads to strike as the correct letter passed the correct location. These PoS bands would break every 1000hrs or so and send us into a panic as we only kept one spare between multiple locations. Hearing one **POP** meant a good 2-3hr delay in bringing the system back online.