File recovery procedures for disaster recovery should be the same as those used for recovering a data volume that becomes inaccessible due to control unit failure.
TrueCopy does not provide a procedure for detecting and retrieving lost updates. To detect and recreate lost updates, you must check other current information (for example, database log file) that was active at the primary system when the disaster occurred.
The detection and retrieval process can take some time. Your disaster recovery scenario should be designed so that detection and retrieval of lost updates is performed after the application has been started at the secondary site.
You should prepare for file and database recovery using files for file recovery (for example, database log files that have been verified as current).