"Do you do backups too, for example to guard against corrupt data getting mirrored across both copies, or accidental deletion?" John Gonzalez, Internet Archive

"Do you do backups too, for example to guard against corrupt data getting mirrored across both copies, or accidental deletion?" John Gonzalez, Internet Archive infrastructure lead, replied: "We have done experiments to confirm that we can back up large portions of our corpus... but this is not a regular practice for us at this time." https://blog.archive.org/2016/10/25/20000-hard-drives-on-a-m https://blog.archive.org/2016/10/25/20000-hard-drives-on-a-m...