Incremental backups and full backups on weekends. Operators doing the backups didn’t know it was incremental. With time, there were only two tapes dedicated to

Incremental backups and full backups on weekends. Operators doing the backups didn’t know it was incremental. With time, there were only two tapes dedicated to those. This was just an ad newspaper and they lost 2 days of ads. As it was only a local failure, they just ran at a loss for to two days and the business didn’t suffer.