Changing the log truncation setting of the Symantec VSS Provider
By default the Symantec VSS Provider takes full backups and truncates database log files. You can change the settings to enable the Symantec VSS Provider to take copy backups without log truncation.
You must add the -copy flag to the Pre-freeze-script.bat file in both the system root directory and %Programfiles%\Symantec\Backup Exec\RAWS\VSS Provider.
To change the log truncation setting of the Symantec VSS Provider
Locate the Pre-freeze-script.bat file in both of the following locations:
Add the -copy flag to the end of each of the three lines that include BeVssRequestor.exe.
"%Programfiles%\Symantec\Backup Exec\BE VSS Provider\BeVssRequestor.exe" -pre2 -log -logscreen -copy