Okay. I am still trying to reach my Linux guru friend, but here is what I have so far. I will supplement this thread with any additional information that I learn after speaking with him.
Basically, the solution is fairly simple if you have a Linux machine. If you do not, then you still may be able to do it, but I do not know how. When you add or change a drive within the DNS-343 (and presumably the DNS-323) the web GUI interface will always want to format the drives (all of them I think). This can be circumvented by doing the following:
1) Mount the drives on a Linux box (either simultaneously or individually it doesn't matter).
When you do you will be presented with two windows (one will be the mounted partition and the contents of the drive and the other will be the system files of the drive (we are interested in working with the latter. If you are moving an existing drive the files discussed below should already be present, but if you are adding a new drive then you will likely have to add the files.
2) There are four (4) files of interest: ChkSCSI, dsk_mapping, raidtab, and raidtab2web
3) I cannot remember which is the one that is critical for modifying to address the issue (when I reach my friend I should find out and will update this thread). I am going to attach screenshots of how they should all look.
4) Modifications should be made under terminal using sudo nano [file name], then control-O to write changes, then control-X to exit
5) You will still be prompted to format the drives by the browser interface for the DNX-343, but if you simply skip passed that your drives should be recognized.
Please let me know if you have any questions or issues and I will try my best to help.
