ReadyNAS 104 lost x-raid volume! how can I recover the volume from my intact 3 disks ?

Hello, I now have the full story that I can report to my original post.

First thx to mdgm for being my first contact, Netgear support was 1st class and they offered to investigate my case as it was my very first support call.

Cause: I was able to repeat the issue twice, so I am pretty sure this is what started the problem. I connected my Xbox One to any of the USB ports 3.0 and 2.0. I was able to play without any issue videos and music. The problem appeared during shutdown or reboot of the NAS.

Symptoms: I lost a disk (de-synchronised) and the admin page became unvailable. When I attempted to reboot/power off the NAS for clean start, the array may have lost another disk which resulted in losing the volume and data.

Resolution: No magic, best is to have a backup but after 2nd and 3rd level investigation via the Support Mode Menu, I was able to access my files directly from Windows explorer (as quick access) by typing \\IPAddress of the NAS. From there, I copied all my files to a spare USB drive. I did a Factory Default (in the boot menu) and let the NAS rebuild the array(volume), once basic configuration done, I copied my data back to the NAS, I had to re-install all the services/Apps and the security.

Lesson learned 1: Don't plug any USB cable between your Computer or Console ! access is via your LAN only. The USB ports are for USB disks only.

Lesson learned 2: Backup your NAS even if you have a fault tolerant array. I have purchased a 3TB HDD that I will put in the 4th slot of my NAS104. This single disk/volume will backup my raid5 volume on a regular basis.

Cheers

Fabcou