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skywalker1215's avatar
Feb 02, 2012

NV+ V2 Disk Failure Detected (Case #17738357)

Hello everyone!

I recently purchased the ReadyNAS NV+ V2. I was really excited about finally having a mass storage device on our network, but since setting it up, we've had nothing but problems.
Here's what's going on:
We initially setup the NAS with four different sized drives in the X-Raid2 config. It took a while to build the raid, but after a day or so, it seemed to be up and working. After a few days, a disk failure was reported. I honestly wasn't surprised since the disks we used were fairly old spares we had laying around. We swapped out the failed disk and it resynced. The next day, it was up and running again...for a few days. Then another failed disk (in a different bay than the first). Again i figured that would happen with old disks. But I went through this cycle 2 more times before I decided to go out and buy 3 new 3TB drives.

The drives i am using are on the compatibility list so i don't believe that's the issue. The new config with the 3 3TB drives is still pulling the same stunts, every day or two, a random drive in a random bay will declare that it's failed. I discovered that if i reboot the device, it finds the "failed" drive and starts rebuilding the raid. 12 hours later i have a working NAS again that lasts for a day or less until it picks a new drive to claim has failed.

I've even already warrantied the device once. The CSRs believed the hardware might be malfunctioning, but the new device i received is still having the same problem.

I've replaced all drives with brand new ones, i've done multiple factory resets, i've tried reseating the drives, and i've tried updating the firmware (5.3.3). One thing i didn't try was changing which raid type i use (to Raid 5 or something instead of X-Raid2)

Has anyone else seen this issue or has any ideas on what the problem could be?

Thanks so much for the help!

Wes

10 Replies

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  • mdgm-ntgr's avatar
    mdgm-ntgr
    NETGEAR Employee Retired
    Could you hook the drives up to a SATA port on your PC and check them using vendor tools running both short and long tests to verify that you don't have a bad batch of drives?

    Please also edit the thread title (i.e. subject of first post in this thread) to include your current case number.
  • I haven't ran the official tools, but i'd checked the drives on a PC before installing them. They showed up correctly in my external enclosure.

    It's currently resyncing and since i'd prefer to not blow up my data again, I'll wait til that finishes to run the tests.

    Is there a way to run the Hitachi test on an external HD that is 3TB? The tool notes it doesn't work on 3TB or greater or on externals. I use a laptop so i can't just throw it inside :(

    I'll test the seagate and WD when i can! I'm doubtful that they are bad since they're different brands and all brand new and all seem to be failing equally. But if they fail the test, i'll gladly take that as the reason i'm having problems since i'm at a loss otherwise.

    I also updated the thread title with my case num.

    Thanks for the quick reply!
  • I've now run the tests on the disks. The seagate and WD both passed the short tests but failed the long/extended. Bad sectors were reported.

    I don't discount that there must be bad sectors on those disks, but does that mean of the 9 drives i've put into the device (all of which have failed at least once), all of them have bad sectors that cannot be repaired? Is it possible the device can be the cause of bad sectors? Or am i just that unlucky?
  • StephenB's avatar
    StephenB
    Guru - Experienced User
    I don't see how the NAS could cause bad sectors
  • Handling of the drives can have a severe impact on the reliability of a drive. An NAS is more stressful on a drive than a PC, which may be on 8-10 hours a day, but an NAS is on for 24. Then when you resync the volume there is constant drive activity for hours on end which will stress drives. But as to directly impacting a single drive, I don't see how. In fact, that's most likely when a drive will fail - during or immediately after a resync.
  • StephenB's avatar
    StephenB
    Guru - Experienced User
    I agree that stressing the drives can make them more likely to fail. Though I think that is different from saying the NAS caused the failures.
  • Thanks all for the help so far.

    I haven't replied for a while because I wanted to give it some time, but the next thing I tried was changing the RAID config. I changed to Flex-RAID (RAID 5). I'm using the same 3tb drives, and the devices has been working for 5 days now with no problems. It's even running a tad cooler. Anyone know why this would be?

    Is X-RAID2 less tolerant of bad sectors than standard RAID types?
    I'm sure i'm flirting with disaster here but hey, if it works for a while, I'm fine with that.
  • StephenB's avatar
    StephenB
    Guru - Experienced User
    AFAIK X-RAID2 has the same tolerance for bad sectors as other RAID. Do you actually have bad sectors? Your earlier posts were not conclusive. Look in the SMART stats under health.
  • StephenB's avatar
    StephenB
    Guru - Experienced User
    skywalker1215 wrote:
    The bad sectors were reported by the diagnostic tools from Seagate and WD.
    ok. How many are there (and are they on all the drives?)

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