這個備份是使用簡單復原模式的資料庫讀取-寫入資料的檔案備份。唯有您計劃將檔案群組設定為唯讀，然後進行差異檔案備份時，這才適用。關於管理簡單復原模式之唯讀資料的詳細資訊，請參閱線上叢書。尤其要考慮如何使用部份備份。

This backup is a file backup of read-write data from a database that uses the simple recovery model. This is only appropriate if you plan to set the filegroup to read-only followed by a differential file backup. Consult Books Online for more information on managing read-only data for the simple recovery model. In particular, consider how partial backups are used.