ReadyNAS NV+ v2 XRAID 2 Recovery

Discussions on using the professional data recovery program R-STUDIO for RAID re-construction, NAS recovery, and recovery of various disk and volume managers: Windows storage spaces, Apple volumes, and Linux Logical Volume Manager.
wido78
Posts: 1
Joined: Mon Sep 01, 2014 5:01 pm

ReadyNAS NV+ v2 XRAID 2 Recovery

Post by wido78 » Mon Sep 01, 2014 5:08 pm

I am trying to recover the data off of my NAS unit, but have not been successful to this point. It appears that I screwed something up when replacing a disk that failed and somehow erased the volume data so I can't get to anything via the RAID.

I powered down the unit last night and pulled each of the drives (labeling each 1-4) so I could mount them in my PC. I tried to use R-Studio by setting it to Raid 5, but all it returned after 6+ hours of scanning was a bunch of partial files so I am assuming I didn't have the raid parameters set correctly? When I say
"partial files", the directory tree wasn't recovered and each of the files only were small chunks as opposed to the entire video file or image, etc.

I then used ReclaiMe, to try and determine the Raid parameters. During it's initial scan it reported that drive 2 was "empty". This was the replacement drive that I inserted into the array after the original failed. ReclaiMe stated that it would try to rebuild the array using Parity Checking? I let it run overnight starting at midnight, but appeared to freeze as it didn't make any progress from 2am to 8am when I checked on it.

Can anyone assist regarding what to do next? I have read great things about R-Studio and am hopeful that it will save my butt!!

Thanks in advance

Corsari
Posts: 131
Joined: Wed Aug 14, 2013 4:18 am

Re: ReadyNAS NV+ v2 XRAID 2 Recovery

Post by Corsari » Tue Sep 02, 2014 12:20 am

Hello Wido

This is the typical scenario that requires a data recovery specialist.

Though search my posts where I explain that the biggest error that people do when They do DIY data recovery is to skip to diagnose the single drives SMART values with utilities like CrystalDiskInfo and next big error is to skip to clone/image them.

If they care their data, they should bear in mind that the unique copy of their data out there are the ones present in the RAID original drives. If one is failed, also the others (especially if they have the same age) may fail or even die during the data recovery operations.

In the mean time if SMART are bad or in warning, the drives must be cloned with specific hardware devices that avoid to stress the disk when bad sectors are encountered: nobody knows how many bad sectors are present and at the end they could be thousands. Cloning with PC and software will hang many time on each of them, killing the drive.

Last: we do receive sets of disks made unrecoverable by crazy or self-killing actions made by the users while playing with the NAS web interface. The worst ones that happen are conversions to RAID 0 or 10, RAID full initializations and stale drives forced to return online (destroying the entire parity structure)

Said that, this looks the typical scenario that explains why they do exist raid recovery specialists :-)

If you need help, you can write me a PM and eventually forward us the drives. We do provide a variety of flat rates that are linked to timing only, so if you are not in a hurry, you can get really a cheap fee. Also we can do remote pre-diagnosis for free.

Regards

Cor.
Last edited by Corsari on Tue Sep 02, 2014 12:48 am, edited 3 times in total.
Robert
Technical Manager @ Recupero Dati RAID FAsTec (Italy)

USEFUL RULES and GUIDELINES
1) What to check BEFORE begin a disk image/clone process [link]
2) Disks that are too slow while imaging/cloning them [link]
3) All my posts on this forum [link]

Corsari
Posts: 131
Joined: Wed Aug 14, 2013 4:18 am

Re: ReadyNAS NV+ v2 XRAID 2 Recovery

Post by Corsari » Tue Sep 02, 2014 12:31 am

P.S. Always thinking about the importance of the data, the data recovery specialists will image the drives in the safest and less distressing way and next will reconstruct the RAID and do the data recovery process, working with the disk images/copies.

Now focus on the data and give them a value.

If they are precious to you, think about asking some estimates for a RAID data recovery of 4 HDDs and beware they will act as we do: flat rates, no diagnosis costs and finally, "no recovery, no fee".

Ciao!
Robert
Technical Manager @ Recupero Dati RAID FAsTec (Italy)

USEFUL RULES and GUIDELINES
1) What to check BEFORE begin a disk image/clone process [link]
2) Disks that are too slow while imaging/cloning them [link]
3) All my posts on this forum [link]

Alt
Site Moderator
Posts: 2271
Joined: Tue Nov 11, 2008 2:13 pm
Contact:

Re: ReadyNAS NV+ v2 XRAID 2 Recovery

Post by Alt » Tue Sep 02, 2014 4:00 am

BTW, it is possible to recover data on a remote computer via the Internet. Or, at least, make a preliminary diagnosis. This article explains how: R-Studio Technician: Data Recovery over the Internet. This article may be of help, too: NAT and Firewall Traversing for Remote Data Recovery. And not only the technician version can work this way.

Corsari
Posts: 131
Joined: Wed Aug 14, 2013 4:18 am

Re: ReadyNAS NV+ v2 XRAID 2 Recovery

Post by Corsari » Tue Sep 02, 2014 4:33 am

Alt wrote:BTW, it is possible to recover data on a remote computer via the Internet. Or, at least, make a preliminary diagnosis. This article explains how: R-Studio Technician: Data Recovery over the Internet. This article may be of help, too: NAT and Firewall Traversing for Remote Data Recovery. And not only the technician version can work this way.
taking care before than any operation to check SMART values and evaluate the chances that the remaining disks may get un-operational soon as well. ;)
Robert
Technical Manager @ Recupero Dati RAID FAsTec (Italy)

USEFUL RULES and GUIDELINES
1) What to check BEFORE begin a disk image/clone process [link]
2) Disks that are too slow while imaging/cloning them [link]
3) All my posts on this forum [link]

Alt
Site Moderator
Posts: 2271
Joined: Tue Nov 11, 2008 2:13 pm
Contact:

Re: ReadyNAS NV+ v2 XRAID 2 Recovery

Post by Alt » Tue Sep 02, 2014 8:11 am

And you can check SMART for remote computer via the Internet, too.

Post Reply