You can create filters to filter certain files for backup or restore. You can either create filters for a particular backup or restore, or you can create them for all backups and restores. 
One filter does always have one specific filter criteria! First, you select one filter criteria in the respective area, followed by adding the specifics to the filter, and then the filter is saved.
To create a filter that will subsequently be available for every backup and every restore, proceed as follows:
1.
Click the  Nero BackItUp icn hammer 392795147 Creating Filter button.
à
The Options window is opened.
2.
Click the File Filters button.

 

 
 
If you want to create filters for a special backup/restore, click the Create New button in the Expert options area in the File Backup/Restore configure screen.
 
 
3.
Click the New button.
à
The Create a New Filter window is opened.
4.
If you want to filter by File Extension: 
1.
Select the Exclude file types from my backup option entry to exclude files with a certain file extension.
2.
Select the Include only files types in my backup option entry to include files with a certain file extension.
3.
Click the blue underlined file types link.
à
The Add File Types To Filter window is opened.
4.
Select an entry on the left and click the >> button to add file extensions.
5.
Select an entry on the right and click the << button to remove file extensions.
6.
Enter user-defined file extensions in the input field if necessary.
7.
Click the OK button.
à
The window is closed. The selected file extensions are added to the filter.
5.
If you want to filter by Date: 
1.
Select the option entry to include only files which are created, modified or accessed on a specific date or time frame.
2.
Click the blue underlined date or time frame link.
à
The Select Date or Time Frame window is opened.
3.
Select a specific date using the calendar or a time frame using the calendar or the input fields.
4.
Click the OK button.
à
The window is closed. The selected date or period of time is added to the filter.
6.
If you want to filter by Size: 
1.
Select with the option entries whether the desired files must have a certain minimum or maximum size.
2.
Specify the size in MB in the input field.
7.
If you want to exclude a specific path:  
1.
Select the Exclude path from my backup option entry.
2.
Click the blue underlined path link.
à
The Exclude Path window is opened.
3.
Click the Add button.
à
A browser window is opened.
4.
Select the folder you want to exclude and click the OK button.
à
The window is closed. The path to the selected folder is added to the The following paths are excluded list. The folder and all of its subfolders are excluded in the filtering process.
5.
Add additional paths as desired.
6.
If you want to select a path again, click the Remove button.
7.
Click the OK button.
à
The window is closed. The selected path is added to the filter.
8.
If you want to exclude a specific file:  
1.
Select the Exclude files from my backup option entry.
2.
Click the blue underlined files link.
à
The Exclude Files window is opened.
3.
Click the Add button.
à
A browser window is opened.
4.
Select the file you want to exclude and click the OK button.
à
The window is closed. The selected file is added to the The following files are excluded list.
5.
Add additional files as desired.
6.
If you want to select a file again, click the Remove button.
7.
Click the OK button.
à
The window is closed. The selected file is added to the filter.
9.
Enter a name for the filter in the Filter name input field.
10.
If you have opened the Create a New Filter window via the File Backup or Restore screen but want the filter to be available in the future for each backup or restore, select the Save this filter check box.
11.
Click the OK button.
è
The window is closed and the created filter is applied and saved.

Creating Filter