Question How to restore data from faulty NAS (2 HDDs in RAID 1)

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la chupacabra

la chupacabra

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Apr 26, 2014
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Hello, my NAS drive (2 HDDs in RAID 1) stopped working and I need to recover the data.
I assume that 1 out of 2 HDD drives from the NAS has failed and the data can be recovered using the other working drive, but not sure how can it be done. Can anyone advise how to do this please?
 
la chupacabra said:
Hello, my NAS drive (2 HDDs in RAID 1) stopped working and I need to recover the data.
I assume that 1 out of 2 HDD drives from the NAS has failed and the data can be recovered using the other working drive, but not sure how can it be done. Can anyone advise how to do this please?
Click to expand...
1. This is specifically why actual backups are needed. RAID 1 is not that.

2. What specific NAS? How were the drives formatted? How has it "failed"?
 
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la chupacabra said:
Hello, my NAS drive (2 HDDs in RAID 1) stopped working and I need to recover the data.
I assume that 1 out of 2 HDD drives from the NAS has failed and the data can be recovered using the other working drive, but not sure how can it be done. Can anyone advise how to do this please?
Click to expand...
If it was RAID 1, it should be readable as normal. A failed drive will not prevent access. If it was RAID 0, 1/2 your data is gone.
 
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Thank you for replies. The NAS is a Buffalo Linkstation LS220D0D0402-EU, with 2 2TB WD Blue HDDs (in RAID 1)
When I connect both HDD to a PC (with SATA to USB adapter) it's says that drive is not accessible and it's asking to format it.
 
la chupacabra said:
Thank you for replies. The NAS is a Buffalo Linkstation LS220D0D0402-EU, with 2 2TB WD Blue HDDs (in RAID 1)
When I connect both HDD to a PC (with SATA to USB adapter) it's says that drive is not accessible and it's asking to format it.
Click to expand...
Because it is in a Linux file system format. Did you attempt to read the data from the NAS before pulling disks out ? As I said, a disk failure in a RAID1 will not make the data inaccessible. Perhaps the NAS itself failed.
There is software that claims to recover data from Linkstation disks -- https://www.easeus.com/data-recovery/buffalo-nas-data-recovery.html
I have no hands-on experience with this software.
 
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la chupacabra said:
Thank you for replies. The NAS is a Buffalo Linkstation LS220D0D0402-EU, with 2 2TB WD Blue HDDs (in RAID 1)
When I connect both HDD to a PC (with SATA to USB adapter) it's says that drive is not accessible and it's asking to format it.
Click to expand...
This all comes down to what failed, exactly?
1 of the drives, or the NAS itself.

And as above, you can't take out a Linux based drive and put it in a Windows PC, and hope to read it.

Lastly, this might also be a case of what SATA to USB adapter you're using.
 
kanewolf said:
Because it is in a Linux file system format. Did you attempt to read the data from the NAS before pulling disks out ? As I said, a disk failure in a RAID1 will not make the data inaccessible. Perhaps the NAS itself failed.
There is software that claims to recover data from Linkstation disks -- https://www.easeus.com/data-recovery/buffalo-nas-data-recovery.html
I have no hands-on experience with this software.
Click to expand...
I have 2 Linkstation 220D NAS enclosures. Both 2TB HDDs came with original enclosures and where configured in RAID 1 The old one without inserted drives it gives error code "The firmware is corrupted" With connected drives it gives error code “Updating the LinkStation firmware” (and stays like this for hours) In both cases NAS Navigator tool doesn’t find it on the network.
I was planning to use that Easaeus recovery tool or one of the tools included with Hirens, but I wanted to check if maybe there is something else that I can try first
 
USAFRet said:
This all comes down to what failed, exactly?
1 of the drives, or the NAS itself.

And as above, you can't take out a Linux based drive and put it in a Windows PC, and hope to read it.

Lastly, this might also be a case of what SATA to USB adapter you're using.
Click to expand...
I'm going to insert those 2 HDDs to another LinkStation LS220 Series that I got after the first NAS stopped working. If it's the same NAS model would it be able to access the data straight away?
The SATA to USB adapter is from Anker.
Would it help if I connect those 2 HDDs to desktop's SATA?
 
la chupacabra said:
I'm going to insert those 2 HDDs to another LinkStation LS220 Series that I got after the first NAS stopped working. If it's the same NAS model would it be able to access the data straight away?
The SATA to USB adapter is from Anker.
Would it help if I connect those 2 HDDs to desktop's SATA?
Click to expand...
1. Maybe.
2. Which specific model?
3. No.
 
USAFRet said:
I meant the USB adapter. Not all are applicable with 3.5" drives.
Click to expand...
It's this one Anker 68UPSATAA-02BUKU
It says on the box that it is compatible with both 2.5" and 3.5" HDD (adapter is providing power for the 3.5" HDD). I've used it many times for data recovery from 3.5" NTFS hard drives
 
I've checked it again with the brand new NAS (the same model) without HDDs inserted shows no errors.
With both HDDs inside it shows the same error code as the old NAS - “Updating the LinkStation firmware” (and stays like this for hours)
When I connect the HDD to PC; in Windows Computer Management it shows the following
D – 977MB (RAW)
E – 4.77GB (RAW)
G – 977MB (RAW)
H – 1842.52GB (RAW)
All partitions RAW, Healthy (Basic Data Partition)
 
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