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Michael Warmoth

asked on

degraded stated after replacing drive 1 with a new drive.

New TS-412 raid 5 with 4x2tb enterprise drives. Initialization went well, even started installing some apps. about 24 hours in drive 1 reported some errors, I replaced the drive, it came up and the errors were gone. Now I am in degraded state with all 4 drives being seen but the raid reports 3/4/5 online and that I need t install a drive in port 1. Volume manager shows all 4 drives up and good and ready. However logical volume in degraded state file system ext 4. Raid management also shows in degraded state,  however I can do nothing from that page.
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Dr. Klahn

The description of the situation suggests that the RAID successfully built from scratch, so one is pressed hard in the the obvious direction -  that the replacement drive 1 is also bad.

Possibility:  Remove drive 1.  Tag it.  Remove all drives, shuffle them around, reinstall them in different slots.  Then rebuild the RAID from scratch.  See whether the problem goes or stays, and if it stays, whether it follows the previous drive 1 or stays in slot 1.

Possibility:  Remove drive 1 from the RAID, take it to a desktop system, attach it to the desktop system and check the SMART statistics for the drive.  Then, regardless of whether SMART says it's good or bad, run the drive manufacturer's Windows diagnostics on the drive.  At that point you'll know whether the new drive is bad or no, and can proceed accordingly.
You have an unrecoverable read error on a surviving disk.  that means DATA loss on the stripe.   Since you had several errors, I suspect these drives are not qualified for the controller.

Did you make mistake of buying retail disk drives that are not qualified for the controller and/or don't have the right firmware?

moving disks around won't help in the least.  The system is ticking time bomb, it would be absolutely stupid to trust the storage farm as it stands now.  Make sure the disk are qualified with that controller, have the proper firmware, and then of course update all firmware.   Run full HDD diagnostics, even if that means booting to windows and moving disks elsewhere.

Consider yourself lucky you found problem before system went live.
Avatar of Michael Warmoth

ASKER

Ok, Since I have nothing on the system yet thankfully I am going to re-initialize - shuffling the drives. I have no experience with QNap but have some experience with Netgear readynas which I had no issues whatsoever when I brought it online and a bit of NETAPP ONTap from work.
 Also the drives in the QNap are barely used Seagate ES3 constellation 7200 rpm enterprise drives if that makes a difference.

Also when I initialized the QNap I selected the newest OS for my 4 drive TS-412 whichg is Firmware version 4.3.3.0404 Build 20171213. Should I not have used this version for my TS-412?
"Initialization went well" needs qualifying.

If it took a day or so after initializing before the volume was accessible then initialization would be complete but if the LUN was available after a minute or so then it really isn't fully initialized even though it pretends to be. You have some RAID protection during the initialization period of the "ready instantly" form of initialization but if one of the disks doesn't have zeros on every sector when it was built parity is going to be screwed until background checks are complete.
This iis late, but i will close this out. I shut down the system, replaced the first drived with a like seagate es3 constellation 2 gig drive. Initialized the system and all has been fine since. Thanks for the responses.
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