Unfortunately no one can be told what fun_plug is - you have to see it for yourself.
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Hi,
I recently had a hardware failure in my DNS-323.
The disks seemed ok (JBOD) so I took them out and put them into a new 323 body - the problem is I only see one of my two root folders when I connect to the 323 over the network.
The new 323 wants to go through an init / drive format cycle (which I don't want) - is there any way to just plug these disks in and get all the data back?
I tried mounting them under Windows (ext fs) and I can see data on one drive OK, but the other just has a single file on it 'file0' that I can't do anything with.
I ran a drive recovery on this second disk and it found a whole bunch of image files, but not much else - so I suspect that the data is there somewhere, I just can't read it.
Thanks for any help,
Dave
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Recovering a JBOD? Good luck with that - this advice may be a little late, but I would suggest you not use JBOD unless you backup regularly and/or are willing to risk losing ALL your data.
You've already tried the ext2ifs windows mount I would have suggested, so I'll skip that - but I do have one question - what was the disk configuration prior to the failure. If you had both disks in a single JBOD volume, there should only have been one "root folder", and you mention two.
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That was a bad choice of words...
I have a single root folder "Volume_1" and under that I had two folders \Media and \Data - I can get to everything in the Media folder, but cannot see the Data folder.
I'm running a lengthy Linux recovery on the disk, and should get most of my image files back, but I suspect all the other stuff is inaccessable.
I set it up as JBOD as I actually thought that this would be easier to recover than any kind of RAID. Just plug each disk into Linux, and mount them to get to the files - but it seems not to be the case. It almost looks like the first drive has all the file allocation table info on it, and the second is just raw data.
If I could configure the new DNS323 to be JBOD, I hope that it might be able to pick up where the old one left off.
Dave
Last edited by kasterborus (2008-06-11 18:08:20)
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I bought 2 new disks, installed them, formatted as JBOD, and when I replaced them with my original disks, everything came back OK...
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kasterborus wrote:
I bought 2 new disks, installed them, formatted as JBOD, and when I replaced them with my original disks, everything came back OK...
this seems to indicate that it needs to have the config set up. Doing the formatting did just that on the new drives....
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kasterborus wrote:
I set it up as JBOD as I actually thought that this would be easier to recover than any kind of RAID. Just plug each disk into Linux, and mount them to get to the files - but it seems not to be the case. It almost looks like the first drive has all the file allocation table info on it, and the second is just raw data.
Dave
I believe that is a fairly accurate description of what happes with JBOD.
To go back to the first part of the statement - why it was set up as JBOD - as you've already found out that is definitely not the case, and I would suggest that you backup your data whilst you still have access to it, and then reformat the disks as separate volumes.
With JBOD & RAID0 you run the risk of loosing ALL of your data if either disk fails, with RAID1 you gain disk redundancy, but at the cost of 50% of the available space.
And last but not least - read my signature
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