Its not hard to understand - I stated that in my post. It improves the "hardware reliability". I also stated that it will not stop deletions, but that is not what occurred. By the way, you can use snapshots to create backups, all that you need to make sure is that your reliability is high enough. Hence, RAID 1. But if the controller kills both drives it is called a double fault - very few reliability applications take in to consideration multiple fault scenarios as they are considered very unlikely. Yes they do happen.
The issue, that I am finding out, is that the DNS-323 created a new file system when it should not have. It was not a virus or other issue that I have. I didn't know that it created a new file system until I went in with GParted with the drives in an USB enclosure.
The original problem was that the Beta bug regarding the Scan Disk is still there. It will not complete. Without it functioning, you can't perform the a file system check for soft or hard errors.
When I restarted I had no visibility at what happened other than my folders disappeared. It wasn't until I took the drives out and have put them into a USB enclosure to debug them that I found the second file system created. It created a second file system on the same physical drive using the same space - 500 GB. However, it realized that the 500 GB was used and so it has set the used space to 0 KB and the free space to 0 MB. In other words, when it restarted it saw the RAID 1 configuration, however, it seems it did not find the starting blocks for the existing filesystem. That in itself is another bug.
I have also found that I could not use the Manual Rebuild as it was greyed out. I don't know if this is a known bug or not.
In any case there was no indication from the Status page that the drives were degraded in any way.
As a final bug, the Fan Control in Auto (Low, High, Off) mode does not seem to function properly as it stays off and the temperature increases to 45C - before I switched the Fan Control to Auto (Low, High).
In summary, 1.08 still seems to have a number of the bugs that were identified in the Beta build. I was under the impression that they were to be fixed prior to the release.