Hi
I'm not sure if it's a bug but the File Split operation fills memory even when "not using cache" copy mode is selected. Today it caused outage of our production SQL server
The "split" function doesn't use any of the special copy modes. The problem with the "big file copy mode" is that it cannot write blocks of any size - it's usually limited to a multiple of the cluster size. This can make it impossible to completely fill a removable medium.