Patent ID: 7996709

Claim:
A method for data protection, comprising: accepting data for storage from one or more data sources, including access control data that is acquired by a security access control system; sending the data for storage in a storage device; temporarily storing records associated with at least part of the data that is relevant to investigation of disaster events, including a portion of the access control data that is acquired immediately before or during an event damaging the storage device, in a disaster-proof storage unit; and when the event damaging the storage device occurs, investigating the event using the records that are stored in the disaster-proof storage unit and are associated with the portion of the access control data, and comprising detecting the event using a detection mechanism in the disaster-proof storage unit, and modifying operation of the disaster-proof storage unit responsively to detecting the event, wherein modifying the operation comprises transmitting the record from the disaster-proof storage unit over a wireless communication link, wherein temporarily storing the records comprises storing the records in two or more disaster-proof storage units, and wherein transmitting the record comprises transmitting two or more different parts of the record respectively from the two or more disaster-proof storage units over respective wireless links so as to shorten a transmission time of the records.