By Default any Media Description applied to Tape or VTL media in Backup Exec 2012 will be removed during any form of Overwrite Operation. A method to change this behaviour is available by registry modification.
Warning: Incorrect use of the Windows registry editor may prevent the operating system from functioning properly. Great care should be taken when making changes to a Windows registry. Registry modifications should only be carried-out by persons experienced in the use of the registry editor application. It is recommended that a complete backup of the registry and workstation be made prior to making any registry changes
1) Use Regedit to locate
HKEY_LOCAL_MACHINE\SOFTWARE\Symantec\Backup Exec for Windows\Adamm
2) Within the ADAMM key create a REG_DWORD value called
3) Set the value data to 1 to maintain the media descriptions during overwrite operations (default behaviour would be set the value data to 0)
4) Restart the Backup Exec services.