Numerous issues, tech support not helping #25149827

Your logs indicate that you've got multiple disks that are failing not a single disk. X-RAID2 single-redundancy is designed to withstand a single disk failure not multiple disk failures.

You may need to try cloning the healthier of the two failing disks using dd_rescue.

readysecure1985 wrote:

Here is a simple guide to quickly recover a failed drive using dd_rescue. I often have to deal with pesky failed drives, so here is a quick simple guide how to achieve this with a free Linux Live CD and a PC with two SATA connections. I will be using a Knoppix 6.2 Live CD for this guide. Can be found at http://www.knoppix.net Using dd_rescue command allows you to copy data from one drive to another block for block. This is especially useful for recovering a failed drive. Often when a drive fails, the drive is still accessible, it has just surpassed the S.M.A.R.T. error threshold. dd_rescue allows you to ignore the bad sectors and continue cloning the bad drive to a new healthy drive. 1) Connect your old drive and new drive to your PC 2) Boot up using your Linux live CD 3) Launch a terminal window. 4) Run fdisk -l to make sure the system sees both of the hard drives. 5) Run hdparm -i /dev/sdx on both of the drives to find which drive is your source drive and which drive is your destination drive 6) Once you know which drive is which you can start the clone process. dd_rescue /dev/sdx(source disk) /dev/sdx(destination drive) 7) You will see the process start, just keep an eye on it, it might take a few hours for the clone job to finish, depending on the size of the drive. Once the process is complete, there will be no notification, the transfer will just stop and you will see the terminal prompt again. If you see a lot of errors or see that there is no more data being shown as succxfer: it means the drive got marked faulty by the kernel. At this point reboot the system and make sure you know which drive is which again, as it is possible they lettering might switch. Run the dd-rescue command again but this time with -r option. This will start the cloning again but this time will start from the back of the drive and will make sure to get the data that has not been cloned yet.

mschneider wrote:
-I contacted Segate, they said that because it was a proprietary Netgear raid config they quoted $6000.00 for a data recovery on drive 1. They recommended I do my own scan of the drive and also basically laughed stating the RAIDx2 config should allow me to simply remove the corrupt volume and the other 3 drives should show my files.

The NV+ v2 uses standard Linux software RAID.

You'd be better off considering our software data recovery services and moving on to consider 3rd party data recovery if software based data recovery is not enough.

mschneider wrote:
The Seagate rep also said if removing the corrupt volume doesn't bring back my share, then perhaps installing the identical drive in the same bay would bring back the share.

Bad advice. At this point it would have been best to purchase data recovery services. Trying things like installing a replacement drive when the volume can't be mounted is only likely to make the problem worse.

mschneider wrote:
-The local computer scanned the drive and said their full scan came back with no errors.

From the logs it is very clear the disk failed. Not sure what test was done on the "local computer", whether SeaTools was run or some other test. A long/extended non-destructive test would be best. It would be good if you could power down the NAS, remove all disks (label order) and test all your disks using SeaTools.

mschneider wrote:
-I tried removing all drives except the brand-new drive 1.

Not sure what you hoped to achieve from that. One disk is not enough to mount the array.

mschneider wrote:
-The system got hung up when booting "installing add-on"

Did you change the MySQL password? If you change the MySQL password away form the default this can happen.

mschneider wrote:
-I tried booting using only drives 2 and 4. The system booted but again did not find the share and failed a scan.

Two out of four disks is no enough.

mschneider wrote:
Overall, I am at a loss on what to do. Please help, I want to recover as much data as possible. A drive fails in a RAIDx2 configuration and all files are gone, and the NAS is completely useless.... this is not the product I paid for.

You will need to consider purchasing an initial diagnostics data recovery contract. In future I would suggest that you backup your data. No important data should be stored on the one device. Multiple disk failures are just one of the things that can go wrong that is out of anyone's control. See Preventing Catastrophic Data Loss