Company I worked with had a rack with two functioning DEC terminal concentrators with an uptime just shy of 10,000 days. They were used 1-2 times annually becau

Company I worked with had a rack with two functioning DEC terminal concentrators with an uptime just shy of 10,000 days. They were used 1-2 times annually because of a legacy mainframe print operation, but weren’t actually needed anymore. In their prime, they were part of a system that probably managed 40-50k terminals and printers. They were powered down and scrapped when the datacenter was shutdown.