NOTE:  During restore, the amount of data received can 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 can be greater than the Transmitted Amount recorded in the backup log. (2) 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.