Cannot use BBB for CIFS share backup

Hello folks,

I need to backup a CIFS share which I have manually mounted as drive Z:\ to my NetWorker server (Windows Server 2012 R2, v18.1.0.2).

In the documentation is mentioned that mount points can be backed up with the block-based backup feature:

Volume mount points—Specify volume mount points as save sets. For

example:

D:\mount_point_name (for a single mount point)

D:\mount_point_name1\mount_point_name2\mount_point_name3

(for nested mount points)

So I created a straight forward client resource with the BBB flag set to yes and "Z:\" in the save set field.

But I get the message:

"\\ \:No such file or directory"

Can anyone help?