Assuming the left drive to be intact, recovering the data should be as simple as removing the right drive, powering the NAS on, connecting to it across the network and reading the data off of it.
If that doesn't work you can try connecting the left drive to your PC and reading the data off of it - you haven't told us what OS you're running on your "MB", but if it's Windows, you'll need an installable file system driver for the linux ext2/ext3 file systems
From personal experience, some one of the updates around firmware rev 1.08 renders ext2ifs unusable and I never bothered to find a replacement - you can try explore2fs or the Linux reader]http://www.diskinternals.com/linux-reader/]Linux reader, both of which have the advantage of being read only.
Last, but not least, don't blame D-Link, blame the user who neglected to back up the data.
Fordem, thank you for the reply.
I am running Windows 7 32bit.
My neglect aside, I pretty much do blame D-Link. The equipment is not working as advertised. This should have been a simple harddrive replacement issue and it clearly is not. From the amount of traffic out there, I know I am not alone in seeing these issues with this unit. Understanding completely that RAID 1 is not a back-up solution, it was, for me, a simple solution for the interim that should have provided enough redundancy to provide some small measure of security. The past few weeks has been frustrating and a seemingly perfect storm of events not occuring as they should. But this is not about D-Link nor about finding blame. I am trying to find a working, in-expensive solution that will result in the recovery of my files with filenames and folders hopefully intact.
I tried transfering the data directly off Drive 0 across the network. With the degraded RAID 1 the data transfer, for whatever reason, was extremely slow. It took over an hour to transfer 200Mb of photos. Additionally, the NAS would keep losing connection and I would be required to reboot the NAS. With a total of 260GB of data to transfer I commenced down the path above.
I will be trying the software solutions above and was hoping for insight, recommendations and lessons learned from anyone who has suffered this same pain.