Your error is (agent's log):
2015-05-05T17:55:19.643-07:00 [03300 warning 'Default'] Failed to get capacity for \\.\PhysicalDrive1: error opening disk device: The process cannot access the file because it is being used by another process (32)
2015-05-05T17:55:19.643-07:00 [03300 warning 'Default'] Skipping hard disk '\\.\PhysicalDrive1'
Turn off anti-virus and other programs that prevents access to the disk.
HTH