Readynas 104 recover data from "failed" Raid5 array

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oyvinla wrote:

 

I got a Readynas 104 with 4x3TB drives in a RAID5 array, which after some time, one of the HDDs started complaining about bad sectors. Unfortunately, I didn't pick this up untill it was too late, and the NAS just "lost" the data.

 

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A single drive failure won't normally result in data loss, so it is likely something else also went wrong (possibly a problem with one of the other drives, or possibly an unclean shutdown of the NAS resulted in a out-of-sync array).

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oyvinla wrote:

after plugging the 4 drives into my PC and running reclaime RAID recovery and file recovery, I am able to see all the data and it seems to be intact

 

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Hopefully it is.  Being able to see the files is encouraging, but they might still be corrupted.

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oyvinla wrote:

Is there a way to get the data off the RAID array without having to buy the reclaime license?

 

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There are recovery services you could use ( including Netgear's: https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service ).  I doubt they'd be cheaper.

If you already have the skills, you could attempt recovery yourself using linux commands - but of course there is risk of doing more damage, and making recovery impossible.

After you do get the data back, I suggest putting a backup plan in place for your NAS.