TrueNAS is an enterprise computer data storage appliance based on the FreeNAS operating system and the OpenZFS file system manufactured by iXsystems of San Jose, California.TrueNAS is a unified NAS file and SAN block storage solution that supports SMB, NFS, AFP, iSCSI and WebDAV connections from workstations and virtualization hosts such as Hyper-V, VMware, XenServer and bhyve.