I don't know if this will help but I back up all my servers to a local disk on the same server each night then the next step in the sql agent job does an execute sql command task and Xcopy the backup files across the network to another location.

I also use Olla Hallengren's backup routine on many servers as it catches any newly created databases (Sharepoint is a pain for that) and I set the last step of that sql agent job is to xcopy all the files and subfolders from one server to another.