please take a look on provided screenshot.
It shows huge disparity between source size and backup size, making me little bit scared regarding correctness of backup data.
For source is set whole C drive 1 TB size, including Windows and excluding some volatile folders like TEMP.
The backup process durration also went down from 5h daily to 0.75h daily.
Any advice how to proceed? Does anyone have SQL to list what is in source file set, disregarding GUI presented information?