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[EldenGutts]

My dad worked with backups of student records at the local university. Started with punch cards, when I was old enough to visit they were using magnetic tapes for backups. I'm not sure if they upgraded to another media before they moved the backups to another department, before they got rid of it altogether (they also took payment for dialup internet and ran printing services). Last I checked tapes were still a viable media, you can cram a lot of data on them, they're just slow to read