Alt-F provides a free alternative firmware for the DLINK DNS-320/320L/321/323/325.
Alt-F has Samba and NFS; supports ext2/3/4, VFAT, NTFS and ISO9660 filesystems; RAID 0, 1, 5 (with external USB disk) and JBOD; supports 2/3/4TB disks; rsync, ftp, sftp, ftps, ssh, lpd, DNS and DHCP servers, DDNS, fan and leds control, clean power up and down... and more.
Alt-F also has a set of comprehensive administering web pages, you don't need to use the command line to configure it.
Besides the built-in software, Alt-F also supports additional packages on disk, including ffp packages, that you can install, update and uninstall using the administering web pages
Alt-F is still beta and is being developed and tested on a DNS-323-rev-B1, a DNS325-rev-A1 and a DNS-320L-rev-A1 hardware boards. Other models and boards are said to work.
Discussion Forum: http://groups.google.com/group/alt-f
STAY AWAY FROM THIS SHIT !! If you replace your original firmware by this crap, it will erase ALL your data by reformating the HD, making all your files unrecoverable by any professional recovery software. Result in my case : pure lost of 2 Tb of very precious data. On top GUI is NOT ergonomic and designed by a nerd who certainely missed a lot of daddy's and momy's love. Bunch of idiots behind this crap ! ****** DO NOT USE THIS ******