Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
May 7th, 2015, 3:53
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?
- Attachments
-

May 7th, 2015, 4:56
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.
May 7th, 2015, 5:55
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?
May 7th, 2015, 6:08
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.
May 7th, 2015, 6:15
I think RAID 5
May 7th, 2015, 6:26
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.
May 7th, 2015, 6:34
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.
May 7th, 2015, 6:56
Main problem for clonning is capacity, 4x3Tb with raid 5: 8Tb
May 7th, 2015, 7:15
databack wrote:I think RAID 5
Your box is 12TB, you have 4 of 3TB drives... Think better
May 7th, 2015, 7:43
Suitsof wrote:databack wrote:I think RAID 5
Your box is 12TB, you have 4 of 3TB drives... Think better

12TB?! When use RAID 5!!!???
May 7th, 2015, 8:08
If it is raid5, you can still replace the defect hdd and rebuild the raid?
May 7th, 2015, 9:21
databack wrote:Main problem for clonning is capacity, 4x3Tb with raid 5: 8Tb
Well,
The is a Disk Span Function in Windows .So You can create a large drive by using the highest capacities you have
May 7th, 2015, 9:39
databack wrote:Suitsof wrote:databack wrote:I think RAID 5
Your box is 12TB, you have 4 of 3TB drives... Think better

12TB?! When use RAID 5!!!???
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.
May 7th, 2015, 10:14
Suitsof wrote:databack wrote:Suitsof wrote:databack wrote:I think RAID 5
Your box is 12TB, you have 4 of 3TB drives... Think better

12TB?! When use RAID 5!!!???
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
May 7th, 2015, 11:37
databack wrote: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?
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.
databack wrote:Main problem for clonning is capacity, 4x3Tb with raid 5: 8Tb
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.
May 7th, 2015, 12:55
"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..
May 7th, 2015, 13:06
Dmitri wrote:databack wrote: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?
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.
databack wrote:Main problem for clonning is capacity, 4x3Tb with raid 5: 8Tb
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.
Thanks Dmitri,
Can you tell me about your solution?
Please PM
May 7th, 2015, 16:12
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.
May 8th, 2015, 14:04
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...
- Code:
[=====DEVICE=====] [==FILESYS==] [======LABEL======] [====SIZE====] [MAJ] [MIN]
[sda10 ] [linux_raid_] [BA-0010753731BE:8] [ 2.73 TB] [ 8] [ 10]
[sdb10 ] [linux_raid_] [BA-0010753731BE:8] [ 2.73 TB] [ 8] [ 26]
[sdc10 ] [linux_raid_] [BA-0010753731BE:8] [ 2.73 TB] [ 8] [ 42]
[sdd10 ] [linux_raid_] [BA-0010753731BE:8] [ 2.73 TB] [ 8] [ 58]
May 9th, 2015, 18:34
*** image the drives before you do ANYTHING!!!! ***
Powered by phpBB © phpBB Group.