TrueNAS is the branding for a range of free and open-source network-attached storage (NAS) operating systems produced by iXsystems, and based on FreeBSD and Linux, using the OpenZFS file system.
TrueNAS designates a range of free and open-source NAS operating systems crafted by iXsystems, based on FreeBSD and Linux with the OpenZFS file system serving as the core technology.