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2 dead disks in RNDP6000v2
Hi,
I had disk 3 (out of 6) with bad sectors reccomending replacement so I hot plug replaced it but the NAS did not see new disk insert. I left it overnight thinking it may be formatting or somethi...
Cloning disk 6 or the original disk 3 might help get you through this. Note that this usually results in some filesystem corruption (because the unreadable sectors can't be cloned and can't be recovered either). So there could be some data loss. You need a cloning tool that does block by block copying. You'd power down the NAS, do the clone, and insert the cloned disk with the NAS powered down.
If disk 3 is still readable, you could also try powering down the NAS, reinserting the original disk 3, and then powering up again.
Either way, I suggest using the boot menu option to skip the file system/volume check. If your files are available, then do a full backup of the data files on the NAS.
Netgear also offers a data recovery service that you might consider: https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
Cloning disk 6 or the original disk 3 might help get you through this. Note that this usually results in some filesystem corruption (because the unreadable sectors can't be cloned and can't be recovered either). So there could be some data loss. You need a cloning tool that does block by block copying. You'd power down the NAS, do the clone, and insert the cloned disk with the NAS powered down.
If disk 3 is still readable, you could also try powering down the NAS, reinserting the original disk 3, and then powering up again.
Either way, I suggest using the boot menu option to skip the file system/volume check. If your files are available, then do a full backup of the data files on the NAS.
Netgear also offers a data recovery service that you might consider: https://kb.netgear.com/69/ReadyNAS-Data-Recovery-Diagnostics-Scope-of-Service
Thanks StephenB,
I powered down and put origional disks in and booted skiping system check as you said and am now accessing the data and copying to another device. I will then replace disk 3 and reboot to rebuild raid and then do same with disk 6.
Thanks so much you saved me so much time and preciouse data.
Regards
LWReid
Great!
LWReid wrote:
I will then replace disk 3 and reboot to rebuild raid and then do same with disk 6.
Maybe start with disk 6 this time. Disk 3 will likely lead to the same result (loss of the volume), but it's possible that starting with disk 6 will get you through this w/o losing the data on the NAS.
If the array does fail, you'll need to do a factory default, reconfigure the NAS, and restore all the data from your backup.
RAID redundancy is great, but unfortunately it's not enough to protect your data from loss. Backups to a different device are the best way to do that.
Hi StephenB
Yes I spoke too soon, while I was copying data both disks failed again and I don't have a full backup yet as I was in the process of copying data.
So I will shut down replace disk 6 and reboot normaly to try rebuild.
LWReid
LWReid wrote:Yes I spoke too soon, while I was copying data both disks failed again
Then your best option is to power down, clone at least one of the disks, and restart the NAS with the clones (skipping the file scan). If you only clone one, then you'd leave the other disk out of the NAS. The general idea on cloning one is that you want to clone the disk with the least damage.
There will be some corrupted data, but hopefully you'd be able to extract most of it.
LWReid wrote:
So I will shut down replace disk 6 and reboot normaly to try rebuild.
This is unlikely to work, you are better off cloning.
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