Hyper-V backup issue

Dear All , 

The backup of all local drives not getting backed up for server for HyperV backup policy.

Only C:\ drive backup is happening. 

Master - Windows 2008 / NBU 7.5.0.6

Client :- WIndows 2008 / NBU 7.5

Policy Type :- Hyper-V

Find the attached bpfis & bpbkar log.

Thanks in Adcance.

Bharat