Adding a soft mirror, switching to dynamic disk (windows)?

I have my backups landing on a Windows 2008r2 server NTFS “basic” disk. I want to add a soft (windows) mirror for a little extra redundancy which requires the disk be converted to dynamic. I noticed the server setup documentation states “If you are using a plain volume change it to a dynamic volume before the first backup.”

That ship has obviously sailed. If I stop the urbackup service and then do the conversion and mirror before I fire it back up, will there be any issues? Are there any practices or procedures I need to worry about?