Multiple copies of data stored at one site or at nearby sites are vulnerable to a single catastrophic event.

Data Disaster Files Case #087765

Dear Joe:
Do you remember the great deal your cousin Larry gave you on the backup system? Well, we just tried to retrieve some old files and it turns out when he said he'd give it to us "real cheap" he wasn't talking about the price. We'd like the bonus back.

Your Boss,
Ned Turner