NetGear ReadyNas316 Two types of Data Visible Type 1 & Type 5

Question

Ready NAS 316 built this with 3,3,3,3,4 & 4 TB respectively effectively gives me about 13.62 TB of Space on Traditional Raid 5 configuration or 14.5 TB on X-Raid 5 configuration. ( I am not sure what configuration is this configured)

Now coming to my sreenshot of the Admin page, there are two volumes

Data-0 containing 13.62 TB Data, Free 0 TB, Type is Raid 5

Data containing 931.38GB Data Free 0 TB, Type is Raid 1

Now I am unable to access the data and the file sturucture on my device.

Background:

I Built this device over a period of time by accumulating HDD as time permited.

I did not know that we should not use the NAS beyond 90% of the allocated space, which I did.

One day, Disk one has failed and the compression has happened and was not able to access the data. I got one new 4TB HDD and inserted into the drive, but nothing happened.

I tried bit if other activities like Jack out and Jack in of the HDD and reboot, which never helped., I guess the issue is something different with the NAS drive.

Its been over a year, I have switched it off and now, because of the Lockdown, I have brough this out to restore my NAS drive so that I can access my data.

Any help on this regard will be highly appericiated and any more inputs required please put it accross.

Can anyone comment, can two type of Data be found on NAS, like Type 1 & Type 5.

StephenB · Answer

In addition, you are likely seeing that the two volumes are inactive correct?&nbsp;
&nbsp;
Do you have a backup of the data?&nbsp; If you do, then do a factory default, reconfigure the NAS, and restore the files from your backup.
&nbsp;
Otherwise, the best way to resolve this is to contact paid support (my.netgear.com).&nbsp; You can ask for per-incident support.&nbsp; Don't purchasing Gearhead unless the mods say you should (&nbsp;JohnCM_S&nbsp;or&nbsp;Marc_V&nbsp;)
&nbsp;
It is possible that per-incident support is enough to get the volume mounted.&nbsp; But if there is file corruption you will need data recovery.&nbsp;&nbsp;https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
&nbsp;
DeepakSondur&nbsp;wrote:
Ready NAS 316 built this with 3,3,3,3,4 &amp; 4 TB respectively effectively gives me about&nbsp;&nbsp;13.62 TB of Space on Traditional Raid 5 configuration or 14.5 TB on X-Raid 5 configuration.
&nbsp;
Can anyone comment, can two type of Data be found on NAS, like Type 1 &amp; Type 5.&nbsp;
&nbsp;

It's because you have unequal size disks.
&nbsp;
In order to use all the space you need to have two different RAID groups on the disks.&nbsp; One is 3x6TB RAID-5 (15 TB, or ~13.6TiB).&nbsp; The second uses the remaining space on the 4 TB drives, and is 2x1TB RAID-1 (1 TB, or&nbsp; ~0.9 TiB).&nbsp; These two RAID groups are then concatenated into a single volume.
&nbsp;
If you look at the partitioning, you'll see a 3 TB and a 1 TB partition on the 4 TB drives (along with two very small partitions for the OS and swap).
&nbsp;
&nbsp;

Sandshark · Answer

Your NAS is seeing two volumes named data.&nbsp; That's typically really two parts of the original array that are out of sync with each other and the NAS can't tell how to put them back together.&nbsp; data-0 is actually the name of the MDADM array of the 3TB partitions, and it's using that name for the "second" volume because data is already taken.&nbsp; In some cases, that can be cleared up by booting with all but one of the drives.&nbsp; If SSH is enabled, cat /proc/mdstat can sometimes lead you to which drive(s) are the problem.&nbsp; You could also just experiment with which 5 will work.&nbsp; But the more drives you have, the less likely that it's only one drive that's out of sync.&nbsp; Each time you try, the OS and swap partitions will need to re-sync.&nbsp; So long as you let those sync's complete, and there is no underlying problem with a drive that prevents it,&nbsp; trying this should not do any harm.&nbsp; But for the best chance of recovery, do nothing yourself and contact paid support.&nbsp; Since you are not also seeing data-1 (the name of the MDADM array of the 1TB partitions of the 4TB drives), it is most likely that just one 4TB drives is not the issue.

Sandshark · Answer

Netgear will only deny support if they think you caused the problem via SSH.&nbsp; There is a log of what you have done via SSH, so they can tell.&nbsp; Data recovery will cost you, and it is not assured.&nbsp; But your situation sounds pretty common (among the failures, not all around), so the chances of recovery are good.&nbsp; Once you do have the data recovered, which will be done to another device, you should keep that other device updated as a true backup.&nbsp; You have just learned the hard way that RAID is not the reliable backup you may have thought.

Sandshark · Answer

With 5 of 6 drives, you would, at best, have a degraded (non-redundant) array.&nbsp; But with something already wrong with the array, adding this additional constraint is likely not a good plan.&nbsp; You can add the 6th drive via a USB to SATA interface.&nbsp; ReclaiMe can recover data from some damaged volumes, I understand.&nbsp; And you can download and run it for free enough to see if it will be at least partly successful.&nbsp;&nbsp;

DeepakSondur · Answer

Yes, you are right, both the Volumes are inactive.

I am a Novice user and after i got struck into this issue, i did not use the NAS for an year now. The recovery from agencies is very very expensive.

How to take a Back up?

Can anyone help in guiding to take the backup?

Thank you.

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NetGear ReadyNas316 Two types of Data Visible Type 1 & Type 5

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