Recovering a faluty RAID0
Posted: Mon Aug 20, 2012 3:06 am
---- Sorry i've posted this also in a wrong section; apologies for cross-posting ----
Hi there,
i'm trying to recover as much as i can from a faulty (R)AID0. The raid was on a QNAP TS-210 Home Nas, and the cause of its fault should be some bad sectors on the array's Disk2 (in there array there were 2 Seagate Barracuda 1TB).
This is what i did:
1. imaged the disks with RaidRecovery (i've found this before knowing about your software); Disk2 revealed bad sectors during the imaging process but the process ended successfully;
2. because of the bad sectors may prevent the array to be recognized, i've tried to scrub Disk2 using HDD RAW Copy, to obtain an image without any bad sector (but, of course, with data loss)
3. copied back the images to actual (new) HDDs (using the same HDD RAW COPY tool
4. tried a LOT of softwares (RaidReconstructor, and many others) but none of them could even recognize the array
5. found and used the DEMO version of R-Studio and following the instructions (working with RAID etc.) i was able at least to see the correct filenames (Folders + Files) that were on the NAS before the disaster, this is what i did:
a. create a new Virtual Block RAID
b. added the 2 disks in the correct order
c. set the RAID parameters as follows:
- Type: RAID0;
- block size: 64KB (should be correct as QNAP uses mdadm for software RAID0, but may be wrong)
- block order is set on: Default (with no other selection possible)
- number of rows: 2
5. The final result (after the scan etc) is the program showing:
- Extra Found Files (in dark green)
- Recognized4 - Ext4 - 2.02 GB - 1.82TB
6. Opening the list of found files and trying to preview anything didn't worked
Probably i've done something wrong with the RAID params? Or it's simply unrecoverable? Of course all of this is only to clarify if R-Studio could work on this: in this case i'll be more than happy to buy a valid license.
Thanks in advance,
Emiliano
Hi there,
i'm trying to recover as much as i can from a faulty (R)AID0. The raid was on a QNAP TS-210 Home Nas, and the cause of its fault should be some bad sectors on the array's Disk2 (in there array there were 2 Seagate Barracuda 1TB).
This is what i did:
1. imaged the disks with RaidRecovery (i've found this before knowing about your software); Disk2 revealed bad sectors during the imaging process but the process ended successfully;
2. because of the bad sectors may prevent the array to be recognized, i've tried to scrub Disk2 using HDD RAW Copy, to obtain an image without any bad sector (but, of course, with data loss)
3. copied back the images to actual (new) HDDs (using the same HDD RAW COPY tool
4. tried a LOT of softwares (RaidReconstructor, and many others) but none of them could even recognize the array
5. found and used the DEMO version of R-Studio and following the instructions (working with RAID etc.) i was able at least to see the correct filenames (Folders + Files) that were on the NAS before the disaster, this is what i did:
a. create a new Virtual Block RAID
b. added the 2 disks in the correct order
c. set the RAID parameters as follows:
- Type: RAID0;
- block size: 64KB (should be correct as QNAP uses mdadm for software RAID0, but may be wrong)
- block order is set on: Default (with no other selection possible)
- number of rows: 2
5. The final result (after the scan etc) is the program showing:
- Extra Found Files (in dark green)
- Recognized4 - Ext4 - 2.02 GB - 1.82TB
6. Opening the list of found files and trying to preview anything didn't worked
Probably i've done something wrong with the RAID params? Or it's simply unrecoverable? Of course all of this is only to clarify if R-Studio could work on this: in this case i'll be more than happy to buy a valid license.
Thanks in advance,
Emiliano