I just wanted to let everyone know that I successfully installed OMV 0.6 on a Zyxel NSA325.
It took abit of work to get Wheezy running on the device. http://zyxel.nas-central.org/w/index.php?title=Debian_on_325
Installing OMV was straight forward. http://forum.nas-central.org/viewtopic.php?f=249&t=15633
This was an interesting project because the NSA325 is a two bay Off The Shelf NAS with a 1600MHz ARM processor which can be found for under $150. http://zyxel.nas-central.org/wiki/Category:NSA-325
The stock firmware was pretty bad. But with Debian and OMV it makes a very nice little device.