The claim is based on personal experience. With Mixpanel I'd expect even better results since their data is append-only by nature. I.e. think about deduplicat

The claim is based on personal experience. With Mixpanel I'd expect even better results since their data is append-only by nature. I.e. think about deduplication when backing up a large append-only log file on a daily basis. Tarsnap has weaknesses but cost of storage for Mixpanel type of workload is not one of them.