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Forum Discussion
Disc Errors reported - disparity between email alert, ReadyNAS Admin panel & logs
I have a ReadyNAS 426, which had 2x 4TB and 6xTB Seagate IronWolf NAS Drives. All drives have been checked as being ReadyNAS compatible.
I recently added a new 8TB drive into my NAS, and during that process got an email telling me one of the 6TB drives (less than 12 months old)-:
"Detected increasing reallocated sector count: [601] on disk 3 (Internal) [ST31000340NS 9QJ6T6CD] 11 times in the past 30 days. This condition often indicates an impending failure. Be prepared to replace this disk to maintain data redundancy."
I also noted on the ReadyNAS Dashboard that the drive in question seems to be running 10 degrees hotter than an identical model right next to it. This all led me to believe the drive is probably soon to fail, well before its time, and I have contacted Seagate to see if they will swap out prior to a failure - or if I have to await the moment of "doom" !!
(screenshots of the admin panel added)
Anyway, I also pulled up to date logs, and that's where it becomes very confusing. Neither the volume or disk logs show ANY problem with the drives. All temperatures are reasonably uniform and the allegedly affected disc does not show any reallocated sectors on the log.
So which do I believe - the logs, or the ReadyNAS email alerts and admin web panel???
Any help or advice, gratefully received.
5 Replies
Sorry - can't work out how to post multiple files - adding other screenshots & logs in reply posts.
It is always best to use the full logs downloaded when checking on the information, though the information being provided on the admin panel came from it as well but there are times that information or status has changed before it even came up atleast IMO, there are also items usually not indicated in a specific log file but might be present in the other or not just clearly presented so it's always best to get the logs for more information and clarification.
I would suggest replacing the said failing drive as soon as you have another one ready. If you have the drive out, it would be best to test it using Seagate's utility seatools to make sure that errors are found and you can request for RMA.
HTH
IanWilson wrote:
So which do I believe - the logs, or the ReadyNAS email alerts and admin web panel???
Believe the email alerts. Your screen shots don't show the full smart stats. The easiest way to see them is to download the log zip file (from the logs page) and then look at disk_info.log
IanWilson wrote:
"Detected increasing reallocated sector count: [601] on disk 3 (Internal) [ST31000340NS 9QJ6T6CD] 11 times in the past 30 days. This condition often indicates an impending failure. Be prepared to replace this disk to maintain data redundancy."
I have contacted Seagate to see if they will swap out prior to a failure - or if I have to await the moment of "doom" !!
600 reallocated sectors and still rising says the drive has failed. You shouldn't use it in your NAS, no matter what Seagate says. Keep in mind that they have a conflict of interest, since replacing the drive costs them money.
But you'll find that you can RMA the drive (and I have done that with fewer reallocated sectors). If you test it with Seatools (requiring you to connect it to a Windows PC using a USB adapter/dock or SATA), you'll almost certainly find that it fails either the long generic test, or the full write-zeros test.
If you can't test it with Seatools, just use diagnostic code 659DC7AE when doing the RMA: https://www.seagate.com/staticfiles/support/seatools/seatools-test-codes.html
Seagate has never questioned RMAs I've done using that code (though I haven't needed it recently).
BTW, while Seatools will offer you an option to "repair" the bad sectors, I suggest skipping that. It will just attempt tor reallocate them (basically telling the drive not to use them). Your counts are continuing to rise, and in my experience the "repair" doesn't last. It's best just to replace it.
Seagate will give you a recertified drive, which will have a shorter warranty (typically 1 year). One option you should look into is doing an "advanced replacement". Then they ship you the replacement right away, and you ship them the bad drive after you get it. It's faster and more convenient - and their shipping charge is pretty reasonable. So if it's available in your geography, I suggest using it.
Thanks for that - very helpful.
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