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Guide

Jul 07, 2019

Solved

no network after lightning strike

No network link no network activity lights USB backup works So disks and RAID systems work (Raid5 4x3TB now 4,2/8,1T free) So a simple solution could be to move the disks to a new 4Bay Read...

StephenB
Jul 21, 2019
Sinegraf wrote:

NV + v2 RAID had the latest available software for that model ..
Now I don't know if it meant X-RAID gibbrich ..
If it has X-RAID, it is probably the "writing order" that is special
the writing order can be affected by "parity delay"
Someone who knows if it is 100% normal (RAID5 standard) or a separate secret rule?

Your NAS uses software RAID (mdadm). XRAID is layered on top of mdadm - it manages RAID groups for you automatically (which allows for expansion of the array). But underneath it is just mdadm - there is nothing proprietary about the on-disk structures.

FWIW, it sounds like R-studio isn't finding the mdadm superblock. It's possible that the superblock was corrupted when the lightning stuck. Though I'd have expected an error on the LCD panel if that were the case.

As I said earlier, I don't know what parameters are used when the array is created.

Sinegraf wrote:

can ReclaiMe manage NETGEAR NAS?

Folks have used it for OS-6 ReadyNAS (which uses the BTRFS file system). I don't recall seeing it used for OS-5, but it likely would work.

The free tool I pointed you too will only find the RAID parameters. The paid version is needed to recover files. However, you can alternatively download the paid version, and see if it can recovery anything before you actually purchase it.

You could also contact R-Studio support, they might know the parameters used by your NV+ v2.

StephenB

Guru - Experienced User

Jul 14, 2019

Looking over this thread again, I think the easiest way to extract the data is to connect the hard drives to a Windows PC and use RAID recovery software (using either SATA or a USB adapter/dock). R-Studio should work and is inexpensive. https://www.r-studio.com/

Sinegraf wrote:

I have done a "test backup", the first terrabite .. (now I had no bigger USB disk). Now I do not remember if I put any restrictions on which boxes for USB backup.. is the "normal setting" -everything??

There is no normal setting, so it would depend on what backup job you created and tied to the backup button.

Do you recall if you have an NV+ v1 (4.1.x firmware) or an NV+ v2 (5.3.x firmware)? You won't be able to use the 5 TB drive with the NV+ v1, as it doesn't support GPT formatting.

Easy ways to tell:

An NV+ v1

says "NV+" on the front chassis
has an internal power supply

An NV+ v2

says "NV+ v2" on the front chassis.
has a power adapter

system.log / kernel.log file, do i find them in the USB backup?
I know the SMART data was good on the disks just before the crash..

System.log and kernel.log won't be on the USB backup. They are downloaded from the NAS using a different mechanism.

Note I forgot that you were migrating from an NV+. The only way you could follow my advice on system.log/kernel.log would be to migrate to a used NV+ (and there you'd be looking for ext file system errors, not btrfs). Also, you'd have to reformat the drives on the OS-6 NAS.

Sinegraf

Guide

Jul 14, 2019

StephenB wrote:
Looking over this thread again, I think the easiest way to extract the data is to connect the hard drives to a Windows PC and use RAID recovery software (using either SATA or a USB adapter/dock). R-Studio should work and is inexpensive. https://www.r-studio.com/

I hawe r-studio somewhere.. probably have a Linux sys disk from an old rescue.. The goal of my system was that I would not need that again .

There is no normal setting, so it would depend on what backup job you created and tied to the backup button.

Then I just test and see what follows .. In the first terabyte came backups from the other NAS, so I do not know if the larger dumps comes with a larger USB disk.. another box..

Do you recall if you have an NV+ v1 (4.1.x firmware) or an NV+ v2 (5.3.x firmware)? You won't be able to use the 5 TB drive with the NV+ v1, as it doesn't support GPT formatting.

I hawe NV+ V2 ReadyNASRND4000v2 and 4x3TB
then it probably will work with a 6TB USB disk??
(I have about 5TB data on the NAS) was thinking about running with NTFS

so, if it does not work to get a full USB backup on the system, and I do not get hold of a control card (which is now broken) or get one used NV + v2 NAS .. then it is only R-studio that applies??

StephenB
Guru - Experienced User
Jul 14, 2019
Sinegraf wrote:
I have NV+ V2 ReadyNASRND4000v2 and 4x3TB
then it probably will work with a 6TB USB disk??
(I have about 5TB data on the NAS) was thinking about running with NTFS

Yes, the v2 should support the 6 TB drive, and it does support NTFS formatting.

Sinegraf wrote:

so, if it does not work to get a full USB backup on the system, and I do not get hold of a control card (which is now broken) or get one used NV + v2 NAS .. then it is only R-studio that applies??

Basically yes. Or you could manually mount the volume on a linux system.

Any v2 you purchase would be fairly old (since it was discontinued about 5-6 years ago). Note that a used NV+ v1 won't work for this.
- Sinegraf
  Guide
  Jul 14, 2019
  StephenB wrote:
  Sinegraf wrote:
  
  so, if it does not work to get a full USB backup on the system, and I do not get hold of a control card (which is now broken) or get one used NV + v2 NAS .. then it is only R-studio that applies??
  Basically yes. Or you could manually mount the volume on a linux system.
  
  Any v2 you purchase would be fairly old (since it was discontinued about 5-6 years ago). Note that a used NV+ v1 won't work for this.
  I feel very stupid .. that I took for granted that my data was safe in this NAS..and that a new system would be backward compatible..at least with a software (in the NAS)
  
  can anyone from NETGEAR answer this:
  
  #Can I buy the controller board / "motherboard" for my RND-4B NV V2 NAS?
  # Do you make a service on such with my problem?
  # Do you have another solution we missed?
  
  if no
  # If I buy a new / modern NETGEAR today then I have to expect to buy a new one, latest within 4-5 years?
  
  ..just wonder if I should send the order on a 524X that I have on my list...
  now I already own a full license on R-Studio ..But now there are some reasons why I do not "want" to do that, one is intracranial bleeding..
  - Sandshark
    Sensei - Experienced User
    Jul 15, 2019
    Netgear offers no parts or out-of-warranty service. They do offer a paid service to assist you in moving your data off your drives so you can put it on a replacement Netgear NAS. So, that's one reason for buying the 524X. You do have to hope the drives and the data on them are still OK, but your steps to date seem to indicate they probably are.
    
    A ReadyNAS (or any other RAID storage) adds redundancy to your data, which is mainly for continued access through a drive failure, not backup. If the NAS is primary storage, not already backup, then it needs a backup. Old IT saying: "If you only have one copy of something, you must not think it's important."
    
    You were a bit unlucky with how long your NAS lasted. I have several that are still going after many years. But it is still little more than a specialized Linux PC, so one should expect it to fail at some point. Whether a lightning arresting system would have helped, who knows. That bolt just traveled miles in air, so why would a little MOV or similar device stop it now?
    
    If you can get someone to certify it was a lighting strike, and you have other damage where the total exceeds your deductable, most homeowner's and renter's insurance does cover you. Of course, it covers the device, not the data. At least I doubt it covers data recovery.
    
    There is a 5V-level serial port on the NAS. Information on using it can be found on the internet, though the pin-put of the various units isn't consistent. The problem is, I don't know if you can log into the serial port if SSH was not already enabled. If you are adept enough at Linux, you could use the serial port interface to type commands to back up your NAS to a USB drive.
    
    One last thing: Have you tried connecting the NAS directly to the Ethernat port of a computer? I had a NAS that was damaged by a power surge (I bought it that way for parts) and it would not work on a "green" Ethernet switch or router, but it would work at 100Kbps on a stronger system, such as directly on a computer.