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4. Reinstall or Update The NVR Server
When the NVR Server needs an upgrade or reinstall because of the system error, users should back up
the “pdcss.mdb” file which is under the old program’s installation root path, then install the new NVR
Server program, and back the file to the new server, in order to make sure that the original record data
can be found correctly. Or else the old record data can’t be found or there would be a search error.
Please refer to Chapter 3 to do database backup.