robocopy on a Windows Server 2008 R2 SP2 machine with the following options:
robocopy W:\ E:\old_files\daten1\ /R:1 /W:1 /MIR /COPYALL /ZB /DCOPY:T /MT 50 /LOG:E:\old_files\copy_w.txt
robocopy copies all of the folders, but at the destination they appear empty without the files. I cannot find any errors in the log file. Security permissions are OK.