NOTE:  During restore, the amount of data received may differ from the Transmitted Amount recorded in the backup log. This can occur for two reasons: (1) During an incremental, differential, or CBT backup (e.g. for a database or a virtual machine), or during a delta backup of a file, the amount of data transmitted is usually smaller than the actual size of the item. A reduction of transmitted data is also noticeable when a file is being saved as a common file during backup. In these cases, the amount of data received during restore may be greater than the Transmitted Amount recorded in the backup log. (2) On the other hand, DS-Client sends information such as file name and size along with a file to be stored on DS-System during backup. This additional information is not sent during restore, decreasing data transfer by about 50 bytes for each file.