Well the expectation is different for different players. If Facebook lose 1 photo for 1 customer out of 10M customers, FB wouldn't care. The user may just assum

Well the expectation is different for different players. If Facebook lose 1 photo for 1 customer out of 10M customers, FB wouldn't care. The user may just assume a glitch. For a small business, losing 1 photo for 1 customer out of 10,000 customers can be a big deal, but nonetheless not the worst case. Offer sincere apology, do extra data backup/replication if those data are extremely valuable to customer, and roll out a new service.