Hi,
I have a Seagate NAS storage with 4x3Tb hdd.
First hdd failed, can I power on case with a new hdd or without first hdd?

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Phoenix Computer Forensic Laboratory
http://www.databack.ir

Oh man, those NAS... they were one of my first recoveries.

Was really the hdd that failed or the NAS itself ?

If it was the NAS and now you can't acess the files on the disk, try this:

a) You may try a new hdd, but things might get even more strange (trust me, I've been there)

b) If i remember correctly those NAS disks are formated in ext4, the case I got on my hands, the NAS had a pcb malfunction and that was affecting the disks. Remove all of them from the enclosure and with a external dock and a linux distro, use MDADM and one by one you will be able to retrieve the files.

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Thanks for help.
First hdd become with a more bad sectors and can not accessible.
I want use other 3 hdd's and backup files.
Can I power on without first?

_________________
Phoenix Computer Forensic Laboratory
http://www.databack.ir

Your box is RAID 0 (stripe) or SPAN RAID (JBOD). To keep data alive better to make max image from bad drive. Further, you should use this image for new drive or constructing your box raid systems virtually.

I think RAID 5

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Phoenix Computer Forensic Laboratory
http://www.databack.ir

If Data is critical then you must image / clone indivisual disks & keep original disks aside by marking disk order. You can give a try using cloned disks.

To rebuild your array you need to follow the instructions in the manual.

I would carefully inspect all drives to be sure what you are dealing with here. If drives are DM series you can expect a lot more trouble.
If drives are ok and not DM series, rebuild RAID with winHex, UFS or R-Studio.

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Digitalsupport Data Recovery
https://digitalsupport.dk

Main problem for clonning is capacity, 4x3Tb with raid 5: 8Tb

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Phoenix Computer Forensic Laboratory
http://www.databack.ir

Your box is 12TB, you have 4 of 3TB drives... Think better

12TB?! When use RAID 5!!!???

_________________
Phoenix Computer Forensic Laboratory
http://www.databack.ir

If it is raid5, you can still replace the defect hdd and rebuild the raid?

Well,
The is a Disk Span Function in Windows .So You can create a large drive by using the highest capacities you have

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Amarbir S Dhillon , Chandigarh Data Recovery Labs [India]
Logical,Semi Physical And Physical Data Recovery
Website-> http://www.chandigarhdatarecovery.com

On the photo you shown is determined the box capacity. If it's configuration was changed (for example, to 8TB) you need to tell about it.

Oh man, this is a model of this box, this is a max capacity supported by this model. You can buy 16TB or other models

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Phoenix Computer Forensic Laboratory
http://www.databack.ir

I would suggest not to do that. Or at least clone each drive first.
3TB drives inside can be ST3000DM001. If so, just cloning could turn into a lot of fun, since one drive has failed already.

If that's RAID5, then 9 TB is the maximum effective capacity for user data.
For images you'll need plain 12 TB. But that's definitely the best problem you may face during this NAS recovery.

P.S.
If necessary, I'll be happy to assist with this recovery remotely.

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• Remote RAID, NAS, SAN, VMware, DVR (CCTV), flash and tape recovery. Data recovery support.

"3TB drives inside can be ST3000DM001. If so, just cloning could turn into a lot of fun, since one drive has failed already."

Also my concern, be very careful..

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Digitalsupport Data Recovery
https://digitalsupport.dk

Thanks Dmitri,
Can you tell me about your solution?
Please PM

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Phoenix Computer Forensic Laboratory
http://www.databack.ir

Your basic plan of attack, in my opinion, is to first remove each drive and clone using ddrescue in Linux onto all fresh drives. If that goes off smoothly with no quantity of bad sectors, the you may want to try adding in a replacement drive and see if you can rebuild (assuming it's RAID 5 and not 0 or JBOD).

If the rebuild fails or more of the drives have bad sectors, then you'll need to build a virtual array using USB adapters/docks and software such as R-Studio. This is where you'll need someone with this experience such as Dmitri or myself to remotely log in to your workstation and find the correct settings. From there you can extract the files onto another storage media.

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Data Medics - Hard Drive, SSD, and RAID Data Recovery Service Company

Recently I did a remote recovery on the same model Seagate Business Storage 4x3 TB NAS with ST3000DM001 drives.

I can tell you it uses Linux Software RAID (mdadm) and partition 10 is the data partition. I would suggest connecting the drives to Linux. Do an mdadm --examine /dev/sd[abcd]10 to see what's going on. If you need help I can assist remotely.

From my notes...

*** image the drives before you do ANYTHING!!!! ***

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Data Recovery Ireland