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#1 2008-09-09 23:54:17

Maddux
New member
Registered: 2008-09-09
Posts: 2

Data Recovery

I'm running a DNS 323 (newest standard firmware) with two 500 GB Western Digital drives as JBOD.  One drive just had a hardware failure (I'm getting this really disturbing clicking) and I was wondering if there's anything that will help me recover the data from the drive that isn't fried.  I tried putting the drive in another computer running Linux and GPartEd could see the drive and the partitions, but didn't know what the partition was (it's EXT3) so it couldn't mount it.

The data on there isn't life or death, but there are a few things I'd really like to get.  So anybody been through this before?  Know any good software or solutions?

(And yes, I'm quite aware what an idiot I was not doing any redundancy, but berate me if you must.  I guess I just flew too close to the sun.)

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#2 2008-09-10 01:36:11

luusac
Member
Registered: 2008-04-29
Posts: 360

Re: Data Recovery

Maddux wrote:

I tried putting the drive in another computer running Linux and GPartEd could see the drive and the partitions, but didn't know what the partition was (it's EXT3) so it couldn't mount it

I have mounted pulled raid1 drives on a machine running ubuntu.  However, I had to explicitly tell mount what the file system was as it complained otherwise (a message to the effect of " 'linux raid member' file system not know".  I did something like mount -t ext2 /dev/sdb1 /pathtomountdriveto then I had access to the pulled drive.
hth

lu

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#3 2008-09-10 03:46:07

bq041
Member
From: USA
Registered: 2008-03-19
Posts: 709

Re: Data Recovery

Also to note that with JBOD, you usually lose all your data when one of the 2 drives fail.  If you are lucky and the second drivew failed you may be able to get some of the data off the first drive, but if the first drive failed, them it is most likely a total loss.  It is one of the disadvantages of RAID0 and JBOD.


DNS-323     F/W: 1.04b84  H/W: A1  ffp: 0.5  Drives: 2X 400 GB Seagate SATA-300
DNS-323     F/W: 1.05b28  H/W: B1  ffp: 0.5  Drives: 2X 1 TB  WD SATA-300
DSM-G600   F/W: 1.02       H/W: B                Drive:  500 GB WD ATA

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#4 2008-09-11 00:16:00

Maddux
New member
Registered: 2008-09-09
Posts: 2

Re: Data Recovery

Thanks guys, I was able to get the drive to mount.  But when browsing to it it says there's only a single file (an index.html file that was in the root folder of the drive).  Am I screwed or are there other steps to take to recover anything now that I've got it mounted.

Oh and bq041: I'm honestly not sure if the first or second drive failed since I'm not sure how they were mounted in the DNS-323.  The drive on the left is the one that failed.

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#5 2008-09-11 01:18:25

bq041
Member
From: USA
Registered: 2008-03-19
Posts: 709

Re: Data Recovery

That is the second drive from the hardware perspective, but I do not know which it is in the JBOD array.  They could have been configured either way.

Most likely you are totally screwed, unless you know how to do in depth bit by bit data recovery.  Those services are very pricey.

For the future, I do not recommend JBOD or RAID0 unless you are manipulating single files that are larger than your largest drive.  Since that is almost never the case, standard is a good way to go, if you want to have full disk size available.  If you want it all on 1 volume (single mount point), you can mount 1 drive to a subdirectory in the other drive.  This way if you lose a rive, you only lose the data from that drive.


DNS-323     F/W: 1.04b84  H/W: A1  ffp: 0.5  Drives: 2X 400 GB Seagate SATA-300
DNS-323     F/W: 1.05b28  H/W: B1  ffp: 0.5  Drives: 2X 1 TB  WD SATA-300
DSM-G600   F/W: 1.02       H/W: B                Drive:  500 GB WD ATA

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#6 2008-10-01 08:35:42

dmg32
New member
Registered: 2008-09-29
Posts: 1

Re: Data Recovery

Hi,

You can recover your secondary hard drive with the help of Stellar phoenix windows data recovery. Download demo version of software and check the preview of recovered data. More inf: http://www.stellarinfo.com/partition-recovery.htm

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#7 2008-10-01 19:40:20

bq041
Member
From: USA
Registered: 2008-03-19
Posts: 709

Re: Data Recovery

dmg32 wrote:

Hi,

You can recover your secondary hard drive with the help of Stellar phoenix windows data recovery. Download demo version of software and check the preview of recovered data. More inf: http://www.stellarinfo.com/partition-recovery.htm

According to the link you posted, this will not work.  This software is for NTFS and FAT filesystems.  The DNS is Linux based and uses either EXT2 or EXT3 filesystems.


DNS-323     F/W: 1.04b84  H/W: A1  ffp: 0.5  Drives: 2X 400 GB Seagate SATA-300
DNS-323     F/W: 1.05b28  H/W: B1  ffp: 0.5  Drives: 2X 1 TB  WD SATA-300
DSM-G600   F/W: 1.02       H/W: B                Drive:  500 GB WD ATA

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