Recently I tried to upgrade my firmware in my ix2-ng box and the box bricked leaving me with 2 TB of replicated data on 2 disks which I couldn't access. With the help of this forum and other I managed to get to my data so that I could copy it to a new disk. This post will outline my steps. I had virtually no experience with linux before and was somewhat intimidated. A little perserverance in my case paid off.
Here are the steps I took. Some may be superfluous as it was mainly trial and error (much error).
First I downloaded and created a bootable ubuntu boot disk using the instructions and image from this site:http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windows
there are other linux bootables on the web but they didn't work for me.
I connected one of the disks from the NAS box to an old computer and booted it with my USB stick.
(I ended up using the 2nd disk of the raid but I don't think it matters, unless one is bad).
Being a windows guy I immediately started the graphic gui. I clicked on the top icon on the left which has a circle inside a triangle and says "search for programs on your computer"
I then clicked on the disks icon which showed me the connected raid disk and 3 partitions. The large one was the one with all my data and it was labeled
Partition type: Basic Data
Contents: Linux RAID Member
Then I opened the terminal program and got the prompt
I created a directory that I would eventually mount the disk on
Now comes the part where you rebuild the raid data
Mainly I followed this posthttp://pissedoffadmins.com/os/mount-unknown-filesystem-type-lvm2_member.html
first install raid controller software:
sudo apt-get install mdadm
Then you need become a superuser:
root@ubuntu:~# mdadm --assemble --run /dev/md0 /dev/sda2
this was the result
mdadm: /dev/md0 has been started with 1 drive (out of 2).
I then left it running for several hours. I have no idea how long it took to complete. it is probably much less tiem.
I got this response:
inactive '/dev/1ee26577_vg/lv3249210a' [1.80 TiB] inherit
then the following:
getting this response
1 logical volume(s) in volume group "1ee26577_vg" now active
And now the final step:
mount /dev/1ee26577_vg/lv3249210a /media/mine
Afterwards I opened the graphic file explorer. clicked to media/mine and found all my files.
Copying to a network share was easy as there is a control panel in the gui that will allow one to connect to windows shares on the network.