I create a file level job backup and only need to backup .xls files like below picture

But when the job is running, why my backup consume more than 300GB? Actually when i filter in the machine, all xls files under E:\ is not more than 50 GB.
Capacity of my E drive is 7.4TB and now the job say is 5% progress which mean the VBR like backup all entire disk without any file filtering.
Anyone know why?




