Lost both Disks in my RAID 1 NAS

Topics about disk partitioning (fdisk, parted, gparted, partimage), Volumes Management (lvm, evms, dmraid), Storage, file systems, ...
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Joined: 11 Dec 2014, 18:10

Lost both Disks in my RAID 1 NAS

Postby georg26 » 11 Dec 2014, 18:29

I lost both disks in my RAID 1 Array on my Buffalo LS-WXL Duo.
I'm now trying to recover / archive /copy or any other operation to get my Data back.
therefore I installed one of the disks into my PC and booted the systemrescuecd
I first tried the tool testdisk.
It shows the partitions of the lost disk
here a screencopy:

Select a media (use Arrow keys, then press Enter):
>Disk /dev/sda - 3000 GB / 2794 GiB - ST3000DM001-9YN166
Disk /dev/md0 - 1024 MB / 976 MiB
Disk /dev/md1 - 5119 MB / 4881 MiB
Disk /dev/md10 - 1024 MB / 976 MiB
Disk /dev/md2 - 2984 GB / 2779 GiB
Disk /dev/sr0 - 413 MB / 394 MiB (RO) - TOSHIBA DVD-ROM SD-M1612

The first line is the right device.
Then I highlighted this line and pressed proceed.
Now, a table to select the partition type is shown.

please select the partition table type, press Enter when done.
[Intel ] Intel/PC partition
>[EFI GPT] EFI GPT partition map (Mac i386, some x86_64...)
[Humax ] Humax partition table
[Mac ] Apple partition map
[None ] Non partitioned media
[Sun ] Sun Solaris partition
[XBox ] XBox partition
[Return ] Return to disk selection

Hint: EFI GPT partition table type has been detected.

After selecting the EFI GPT and pressing Analyze the following screen is shown.

Disk /dev/sda - 3000 GB / 2794 GiB - CHS 364801 255 63
Partition Start End Size in sectors
> MS Data 2048 2002815 2000768
Linux Raid 2048 2002943 2000896 [md0]
P Linux Raid 2002944 12001263 9998320 [UNINSPECT-EM027:1]
P Linux Raid 12007424 14008303 2000880 [UNINSPECT-EM027:10]
P Linux Raid 14008320 5843756007 5829747688 [LS-WXL027:2]

The last three lines are green, the other are grey.
when I highlight the last line, then the following information is shown:
md 1.x L.Endian Raid 1 - Array Slot : 0 (0, failed, failed, failed, failed), 2984 GB / 2779 GiB

Now my question:
what shall I do now?

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