It was quite likely written on an Exabyte device [1], you may be able to find out which by looking at the type of tape used - MP tape was used on standard Exaby

It was quite likely written on an Exabyte device [1], you may be able to find out which by looking at the type of tape used - MP tape was used on standard Exabyte drives, ME (shiny, evaporated metal) tape on 'Mammoth' drives. It could also be AIT [1], a Sony-proprietary format which competed with Exabyte. [1] https://web.archive.org/web/20070226174943/http://www.exabyte.com/support/online/documentation/whitepapers/history.pdf https://web.archive.org/web/20070226174943/http://www.exabyt... [2] https://en.wikipedia.org/wiki/Advanced_Intelligent_Tape https://en.wikipedia.org/wiki/Advanced_Intelligent_Tape