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ReadyNAS 102: how to recover data from RAID-1 disks?
How do I recover the data from the 2 RAID-1 disks that used to be a ReadyNAS 102 (FW 6.5.0)? I have SATA-to-USB cradle/cable and run a Windows 10 PC. Basically, after the upgrade to FW 6.5.0, ...
kblam wrote:
I've powered it down, and re-inserted the two disks, and powered it back up (I've done this before several time, actually), and RAIDar still sees the unit but indicates 'No disks detected.'
Sometimes I've found that actually disconnecting the system from power can help with bios device detection, so I thought it worth a try. Most modern electronics are never really off as long as they are powered. But it looks like the system is locking up after the boot. It could be the chassis hardware, something wrong with one of the disks that eventually crashes the SATA bus (or drivers), or something really wrong with the 6.5 upgrade.
You can also test the drives in a windows PC (perhaps with a USB adapter), with the vendor tools - seatools for seagate, and lifeguard for western digital.
kblam wrote:
Question on the customer support: if I go all the way to a data recovery contract, if I expect that my disks are in perfectly good shape, would the data recovery services produce an image of my disks on a third disk with my file structure and file names fully intact? Or would the recovery be just a dump of all the files w/o any file structure and files named by some some arbitrary recovery sequence? I have some 20k files on these two 4-TB drives, so such a dump of a recovery would be rather useless.
There are several scenarios here. Tracing one path...
If the chassis has failed (possibility but not a given) then you first would get a replacement RN102 under warranty.
At that point you reinsert the original disks and power up. Perhaps the system boots, and the original lockup still occurs.
Then you use support again to resolve the lockup problem. Perhaps at that point all your data is intact and mounted, but if the volume were corrupted, you would need a separate data recovery contract.
Netgear's data recovery team works remotely, and you would be able to discuss with support the odds of success and what they could provide before you execute that contract.
khushalvyas wrote:
the only software which could show all my files was Reclaime
Some other users have also posted good results with Reclaime. I haven't tried it myself.
khushalvyas wrote:
however to save the showed files it needs a licence of 200 $ which i cant afford as of now.
And if the file system is corrupted, it might not recover everything anyway. We hear this story over and over. RAID is not enough to keep your data safe, and RAID recovery can be expensive, time consuming, and is not guaranteed.
The best approach is to put a backup plan in place (investing in it over time, and expanding it as your data storage grows).
I largely agree with StephenB,
however something very interseting happened ... surfing through various forums and information .. landed up on Active @ LiveCD with capability to handle the BTFRS,
so .. downloaded the image and made a bootable pen drive.
Connected my HDD from NAS to my PC through SATA,
booted the Active Live CD and VOILA,
the partiions automounted and all my data was there in front of me...
Had the option of trying to fix the partition but did not go in that direction.
used file manager app to backup all my essential data. ...
its a work in progress and as I write this I have already copied 35000 files and about 120 GB .. another 650 GBS to go ..
throughput is about 70 mbps .. so its quite fast actually ..
Very pleased with the recovery ... hope it helps
will post final results after complete recoery
Regards
Khushal
khushalvyas wrote:
@landed up on Active @ LiveCD with capability to handle the BTFRS, so .. downloaded the image and made a bootable pen drive. Connected my HDD from NAS through SATA, booted the Active Live CD and VOILA, the partiions automounted and all my data was there in front of me...
Good to know, thanks for following up with that.
Thank you so much .. have other members .. tried and have had some success with Active @ Live CD its Free ...
Regards
Khushal
And one of the best part is it is GUI based with no requirement of deep linux knowledge ..
Recovered all of 850 gb of data, fortunately my disks were fine .. .but no ... safeguard or technique to beat reqular back up s .. cheers
The solution from khushalvyas came a week late for me :)
Anyway, the outcome of my case is that I paid for an extended warranty/tech support contract for one year since the original 90 day support period had long expired. Tier 2 and Tier 3 identified a firmware or OS corruption that could not be resolved remotely, so I received a replacement NAS unit. After I received the new unit, Tier 3 recovered my data (3 TB) for me onto an external drive.
I had a full backup in Amazon Web Services Glacier that would've taken me longer and cost more to restore, so allowing Netgear Tier 3 to recovery my data was convenient and cost effective.
What I would say is that the Netgear Tier 3 folks really know what they're doing and rocked.
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