I was trying out xcopy tool to copy/deploy files/folder to remote locations esp UNC based folders and I happened to come across ROBOCOPY!!! It is a relatively new tool which is capable of coping entire folders/sub-folders/files to a normal folder located on a UNC! The files are copied only if the existing files on the destination folder have different time stamps or different file sizes.

Syntax
      ROBOCOPY source_folder destination_folder [file(s)_to_copy] [options]

Example: