(SOLVED) First unRAID drive error - questions on route to fix


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Hi,

 

I've been using unRAID for about a year now with ZERO issues whatsoever, i love this thing.

When i first configured my array I setup email notification's as the guide I used for configuration suggested and have been pleased with all the many "PASS" emails I've received. This morning i got my first heart attack from the system and got a "FAIL" message with the below error message:

 

Disk 7 - ST2000DM001-1CH164_Z1E42NBH (sdc) - active 24 C (disk has read errors) [NOK]

 

I'll say I'm above average when it comes to tech savviness, storage, and have even dealt with enterprise grade storage in one form of another for the past 7 years in my career. But when it comes to my own personal data on unRAID there's some parts that are still new to me. After doing some Googling, browsing the forums, and even Reddit, I've seen some mixed results on my next course of action and figure its best to ask here.

 

I've seen mixed recommendations of people saying the filesystem on that drive needs to be fixed etc.

Currently i turned off Plex so i don't have any read requests going to the array. The only other items that connect to it is my main desktop PC and a Firestick (both i stopped accessing any files as soon as i saw the error message this morning). The array is currently online, and parity is valid. Is it as simple as just stopping the array, powering down, pulling that disk and replacing with a new one (which i know a pre-clear should be run on) or do i need to do anything with the file system on disk 7? I also saw another recommendation of after the rebuild being complete to run a parity check with "write corrections to parity" turned off.

 

I've attached my diagnostic file to this post and am looking forward to any responses.

 

Data that's on the array is a backup of my personal files on my main PC (documents, photos, music) and my DVD rips.

 

Thanks!

 

System Info:

unRAID v6.2.1

Intel Core i3-4160

6GB DDR3 (2x3GB sticks)

 

Kingston 8GB USB Flash for OS

Array of nine devices - 20TB

Parity - 4 TB

1x4TB

2x3TB
5x2TB
The only docker I'm using is Plex Media Server.

 

nas-diagnostics-20181001-1938.zip

Edited by digitalagent
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A few read errors don't typically call for replacing a disk, and Unraid hasn't disabled it. Try running an extended SMART test on it. Click on the disk in Main to get to its page.

 

That's a pretty old version of Unraid you're running. You should consider upgrading after you get confident in your array again. Old versions are more difficult for us to support.

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So i ran the long SMART extended test. Says it completed without error.

I'm not the best at reviewing SMART results, only thing that concerned me was the 6 uncorrectables

 

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   111   099   006    Pre-fail  Always       -       31415680
  3 Spin_Up_Time            0x0003   096   095   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       87
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   069   060   030    Pre-fail  Always       -       10013517
  9 Power_On_Hours          0x0032   067   067   000    Old_age   Always       -       29602
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       87
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   094   094   000    Old_age   Always       -       6
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0 0 0
189 High_Fly_Writes         0x003a   087   087   000    Old_age   Always       -       13
190 Airflow_Temperature_Cel 0x0022   076   052   045    Old_age   Always       -       24 (Min/Max 23/29)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       19
193 Load_Cycle_Count        0x0032   084   084   000    Old_age   Always       -       33153
194 Temperature_Celsius     0x0022   024   048   000    Old_age   Always       -       24 (0 10 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       1696h+59m+50.082s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       9984744079
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       55994108160

 

 

Should i consider replacing the drive or just keep an eye on it and see if those numbers increase?

 

thanks!

nas-smart-20181001-2215.zip

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Hmmmm. So i am seeing on the main page for disk 7 an error count of 768(not sure the total number previously), while all the others are at 0. I do have a spare brand new 3TB drive laying around and would just feel comfortable with replacing it.

 

Is it as simple as just following this guide:

https://wiki.unraid.net/Replacing_a_Data_Drive

 

or do i need to worry about any type of corrupt files/file system repair?

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