When creating a backup plan, you can choose between standard and simplified naming of backup files.
If you select the Name backup files using the archive name... check box:
This simple naming scheme enables you to create a portable image of a machine on a detachable media or move the backups to a different location by using a script.
This behavior is useful when you rotate USB hard drives and want each drive to keep a single full backup or all backups created during a week. But you might end up with no backups if a full backup to your only drive fails.
This behavior can be suppressed by adding the [Date] variable to the archive name.
If you do not select the Name backup files using the archive name... check box:
Restrictions
When using simplified file naming, the following functionality is not available:
Tip. The FAT16, FAT32, and NTFS file systems do not allow the following characters in the file name: backslash (\), slash (/), colon (:), asterisk (*), question mark (?), quotation mark ("), less than sign (<), greater than sign (>), and pipe (|).