A backup set represents a group of files that are included in any cloud backup, provided the backup set is enabled. When you create backup sets, you can specify files by extension type, name, location, size and/or modification date. For example, you can create a set called "My Music" and include all files with the extensions *.wav and *.mp3 that are located in the folder My Documents > Music.

If a file is included in a backup set and the backup set is enabled, it will be included in the backup even if it is not selected as a backup file.

If a file is included in an enabled backup set but also included in an exclude set, the file will be excluded from the backup.

When you create a backup set, it is enabled automatically. You can manually disable or enable backup sets.