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
Main Code site: http://code.google.com/p/alt-f
Discussion Forum: http://groups.google.com/group/alt-f
Excellent. I should have migrated to Alt-F long ago. My DNS323 (rev C) device is much easier to manage now. Really like the Debian support; I "debian -chroot <command>" as needed.
Wonderful real-time detailed view of NAS with fully modern capabilities (automatically installs Debian 7)!
Excellent replacement for the D-Link firmware on the DNS-323 and similar models. I have been using this for over 2 years now on my system and it is running faster and better than with the stock firmware that D-Link has quit supporting. The author has been very receptive to updates to the code from other users, myself included.
After d-link kicked the support for the device I got a half broken new device. The original firmware has always had issues and wasn´t working with all the features, BUT Alt-F seamed to fix them all for me. Great work :D