I have a 4TB NTFS external hard drive connected to a Raspberry Pi 4 with 2GB of RAM, running Raspberry Pi OS Bookworm. Reformatting it as ext4 is not practical right now. The drive currently uses NTFS-3G and has been generally reliable, although it sometimes struggles with simultaneous activity from Transmission, Plex, and Audiobookshelf.
I'm considering switching to the newer in-kernel NTFS3 driver for better transfer speeds and performance. However, I've heard that NTFS3 has had bugs and may be more vulnerable to filesystem corruption after an unexpected disconnect or power loss. These events are uncommon, but the Pi may occasionally restart when I reboot my router. I also don't currently have a Windows machine available to run chkdsk, and I'd prefer not to deal with frequent filesystem repairs.
How reliable is NTFS3 in practice compared with NTFS-3G for this kind of always-connected external drive?
3 Answers
The long-term Linux solution would usually be ext4, but that only makes sense if the drive does not need to be moved between Windows and Linux. For an NTFS disk that must remain cross-platform, NTFS-3G is still a reasonable choice when reliability and easy recovery matter more than maximum throughput.
There isn’t a reliable percentage or benchmark that says NTFS3 is a specific amount less reliable than NTFS-3G. NTFS3 is generally faster because it runs in the kernel instead of through FUSE, but it has had some bugs, including reports of problems on certain kernel versions. NTFS-3G is slower, but it has been around longer and is often viewed as the more conservative choice for important data.
For a drive handling downloads and media, NTFS3 may work fine, but I wouldn’t treat it as a replacement for backups. If the data is difficult to recreate and you can’t easily run Windows repair tools, staying with NTFS-3G is the lower-risk option.
Unexpected power loss can damage the filesystem regardless of which NTFS driver you use. The best protection is clean shutdowns, a UPS if the setup is important, and keeping a backup of anything you cannot replace. Also make sure the Pi and external drive are both receiving stable power; USB power problems can look like filesystem-driver failures.
If your current setup is stable and the performance is acceptable, switching drivers purely for speed may not be worth introducing another variable. You could test NTFS3 with nonessential data first and keep the existing filesystem backup available.
The exact kernel version matters, since NTFS3 behavior and bug fixes have changed over time. It’s worth checking the kernel shipped with your operating system before deciding.