Perry Whittle (4/12/2016)
Jon.Morisi (4/11/2016)
Move Database Files Without Taking the Database OfflineNo good if the table is huge and your storage subsystem is slow. Introduces fragmentation too.
Move the files in a planned downtime window is the best option
The topic user specifically stated, "Hi I need to do it live? Can I create new db files and move across live?"