WD ShareSpace 4TB NAS recovery success after firmware update problem

A customer had no more access to the sharespace NAS 4TB after a firmware update. By following a couple of guidelines from the archives here (  http://community.wdc.com/t5/WD-ShareSpace/HOWTO-Sharespace-RAID-5-Data-Recovery/td-p/287736 ) (  http://community.wdc.com/t5/WD-ShareSpace/WD-SHARESPACE-RAID-5-FAILURE/m-p/363255#M3016 )

I’ve used an Ubuntu live cd (usb actually) on a pc where we connected the 4 sata HDD.

The problem was that the raid created with mdadm apparently had no LVM2 file systems. 

I was starting to make an image of partitions with dd in order to tinker a bit with other solutions, when I decided to try and mount the raid read-only:

sudo mount -r -t auto /dev/md0 /mnt/raid

I had no warnings so I checked the mount point and… my data were there.

I suppose then that not all the WD sharespace raids …share the same file system configuration.

Check this before starting with other solutions.

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Nice, thanks for sharing.