I've been using Freenas for 2 years now, starting Freenas 8 (just updated to 9.2.1.2 ), I never experience on what you describe about renaming a file in Freenas. Yes, you can always rename/edit/modify a file in Freenas. But you're right about data protection in Freenas, it's unparalleled! I've got 600GB of personal/family files in my NAS...