FreeNAS is a free network-attached storage server . It supports CIFS ( Samba ) , FTP , NFS , rsync , AFP protocols , iSCSI , S.M.A.R.T. , local user authentication , and software RAID ( 0,1,5 ) . FreeNAS is a free network-attached storage server , supporting : CIFS ( Samba ) , FTP , NFS , rsync , AFP protocols , iSCSI , S.M.A.R.T. , local user authentication , and software RAID ( 0,1,5 ) , with a web-based configuration interface .