i2CDP records and saves the changes of data in logs while data is replicated. When the data on the production side is mishandled or infected with virus, users can recover the data from the target side to the production side to the specified moment before the failure. i2CDP can capture changes at the file byte level to achieve high precision data recording with accuracy up to microsecond, and applies to trading systems of various industries like banks and securities companies, enterprise resource planning (ERP) systems, campus card systems, and hospital information systems (HlS) for continuous protection of files and databases in these systems.