Have you ever needed to format a new hard drive or USB drive, and were given the option of selecting from acronyms like FAT, FAT32, or NTFS? Or did you once try plugging in an external device, only ...
On a Windows system, the equivalent operation done using UNC paths is more or less instant, since it recognizes \\winserver\winshare as the same source and target location, so the file is just moved ...