Does anybody have the same problem? So far this has happened twice to me:brand new Ultra6. I get the message that Disk1 (also brand new, no SMART errors etc) is dead (out of 4 disks with dual redundancy Xraid2). I put in a replacement disk, nothing happens. No re-synching, on the webinterface, Disk1 still shows up as dead. I put back the original disk1 and reboot, everything is fine again. This has happened twice. My question: apart from why does a good disk show up as dead when it isn't, isn't the unit supposed to integrate the new (replacement) disk on the fly?I am wondering if something is wrong the my chassis. Because:about a week after I bought the unit and after running it on 3 disks, I put in a 4th one and then it crashed while re-synching. The unit would then not go properly into tech-support mode, only after several OS-reinstalls (basically, when in tech support mode it picked up an IP address outside my network!?). Netgear tech support eventually managed to get some of my data back (they too could not figure out what had happened in the first palce and/or why my unit would not go into tech support mode), but that took several weeks. In the meantime I tried to return the unit but the shop would not take it back because it's past the 2 week return period..Thanks a lot!

What make/model of hard drives are installed?

Seagate Barracuda LP ST2000DL003

Do you recall what your case number with NETGEAR was?If you do, please update the title with it.Those are completely compatible drives with the ReadyNAS Ultra 6.Have you experienced any of the same issues since support has accessed the unit?Have you found any indicators of ATA errors or reallocated sectors in the logs?Have you found any indicators of I/O errors in the logs?

1. The dead disk issue happened after the ticket was closed2. Yes, since last weekend: Disk 1 now has 6 ATA errors, no reallocated sectors but this has happened after the disk has supposedly died (twice)3. not sure what I/O errors are but I guess not. No other problemsthanks

ok, had the same issue again:- experienced disk failure of Disk1 again- took disk out and put back in, rebooted- front view says Disk 1,3,4 all dead, RAIDAR says all disks ok, NAS display reads "Degraded Volume"- switched NAS off- inserted new Disk1 (replacement disk)- power up- NAS runs through various checks, says resynching, then "Degraded Volume"- cannot access front view anymore- Raidar says all disks fine- NAS still running backup jobs in the background- I leave it running for 2 days, no change- reboot- Volume now resynching- Frontview still does not work- 10h later, resynching completed- Frontview still does not work, no access to shares- rebooted- NAS cannot find network connection- rebooted- same- rebooted again- network connection found- still no access to data- front view still does not work- Raidar says everything fine- Reboot & reinstall OS- no changeIs there something wrong with this unit or not???I've been running a DUO for 3+ years without any problems but I am sick of this one

Dead Disk.. but not really | NETGEAR Communities

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StephenB

Guru - Experienced User

Apr 13, 2012

martinsbootfair wrote:
...1: with Xraid 2 my understanding was I can start off with one drive and incrementally add others, up to the max of six. Auto volume expansion will just do it's job. How do you do this in reverse if you have a problem with a faulty drive? ie take the drive out and tell the volume to adjust itself to the new situation?
2 If that is not possible how do you test your new drives BEFORE putting them into the Raid with the same software that the Raid uses?
3: Should I take out a running drive and replace it with a different drive as a test maybe?...

martinsbootfair wrote:
...1: with Xraid 2 my understanding was I can start off with one drive and incrementally add others, up to the max of six. Auto volume expansion will just do it's job. How do you do this in reverse if you have a problem with a faulty drive? ie take the drive out and tell the volume to adjust itself to the new situation? 2 If that is not possible how do you test your new drives BEFORE putting them into the Raid with the same software that the Raid uses? 3: Should I take out a running drive and replace it with a different drive as a test maybe?...

1: the replacement method is in the PRO FAQ (http://www.readynas.com/?page_id=5073). You take out the old disk, wait for at least 10 seconds, and insert the new one. (It will take more than 10 seconds to put the new disk into the tray anyway...). What you can't do is downsize the volume. It would be nice for several reasons, but you can't.
2. My suggestion for that is to use vendor tools (which of course is not the same software that the NAS uses).
3. I wouldn't do that. The resync process stresses the remaining drives.

BTW, Seagate will take back your drives even if you don't use their test. (Apple users can't run Seatools at all). You use one of the error codes here: http://www.seagate.com/staticfiles/supp ... codes.html They do reserve the right to reject it if they decide the drive is good, and will charge you for return shipping. They have never done that to me, and I have sometimes used those codes. Seagate will give you a refurbished drive, and the model will not always match what you returned, and might not be on the HCL. So in general you are better off exchanging them through the retailer if you can (probably too late for you I realize).

Ignite141
Aspirant
Apr 14, 2012
I'm having a similar problem with my ReadyNas Duo. Disk 1 Seagate ST31000333AS is reported as dead but is, in fact, working fine, i.e, I can find it on my network and access all files. I have recently replaced what I think was a truly dead Disk 2. My problem is that, because Disk 1 is deemed to dead, configuring Raid is not an option - Resync volume is greyed out and "Status: Not redundant. A disk failure will render this volume dead" is reported.

I have tried replacing Disk 1 with both the old and new Disk 2 but then I can't access the Nas on my network. Only when I put the supposedly dead Disk 1 back in the Nas can I access the files but I still can't configure Raid. As far as I can see, my new Disk 2 is sat doing nothing and all will be lost when Disk 1 really does die!

Can anyone help?
StephenB
Guru - Experienced User
Apr 14, 2012
Have you reviewed the disk health on drive 1? Even if you can access it, it could possibly be sick.

Assuming it is truly healthy:

-Though it is brute-force and ugly, you can perhaps clone disk 1 to the new disk 2, and put that new disk into slot 1 and boot the Duo. If it works, you could then delete the partitions on the original disk 1, and insert it into slot 2.

-If you have a backup, you could also reset to factory defaults. (If you don't have a backup you should make one!). A variant here is to temporarily install the new drive into your PC and copy the data onto it. Then factory default drive 1, restore the data. Finally delete the PC partition on the new drive and hot-add it to the duo.

Or submit an on-line support case of course. If you are not feeling too anxious, that is probably the least work.
Ignite141
Aspirant
Apr 14, 2012
Stephen

Thanks for your reply. What's the best way to check the disk health on drive 1? There doesn't seem to be any utility on the Nas - everything to do with that disk is greyed out.
mdgm-ntgr
NETGEAR Employee Retired
Apr 14, 2012
If you download the logs (Status > Logs > Download all logs) do you see a disk_smart.log with health info for the drive?
Ignite141
Aspirant
Apr 14, 2012
I can't say that I understand all the log details but

===START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

SMART Error Log Version: 1
No Errors Logged

WHEN_FAILED is blank for all attributes

Results are similar to those of disk 2, which is recorded as healthy and has a green light.

I can't see any evidence that there is a problem with the disk.
mdgm-ntgr
NETGEAR Employee Retired
Apr 14, 2012
Do you see any ATA errors?
Ignite141
Aspirant
Apr 14, 2012
The only reference I see to ATA is:

ATA Version is: 8
ATA Standard is: Not recognized. Minor revision code: 0x29

This is the same for disk 2.

Can't see any reference at ATA errors but not sure where to look!
Chris_S
Aspirant
Apr 19, 2012
Well, the L3 engineer spent quite some time on my unit, the end result is that I will be getting a replacement chassis. He did mention that there might be some issues with that particular model of Seagate drives (despite being on the approved list).
mnot
Aspirant
May 14, 2012
FWIW - same problem for me; really annoying. Ultra 4 + Seagate ST2000DL003-9VT166, which is on the HCL.

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Dead Disk.. but not really

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