said by IamGimli:^^ what he said.
No he doesn't. Incremental backups are notoriously unreliable as a general rule, and rarely ever work for database backups.
Full system backups or, even better, continuous sector-based shadow copy of the volumes are much more robust, reliable backup technologies when used in conjunction with the appropriate database agents.
None of that would have helped anyway in this case unless it was combined with off-site storage of those backups as there's very little backups can help with when a power outage takes out the storage arrays where those backups are stored and prevents them from being usable.
Hence my comment he should get a clue before telling anyone how to run their backups.