Disk(s) with read errors, real or imaginary problem?

[Energen]

Unraid keeps giving me a red warning that Disk 6 has read errors ---- 4, to be precise.

 

Jul  5 01:38:32 UNRAID kernel: md: disk6 read error, sector=1952415512
Jul  5 01:38:32 UNRAID kernel: md: disk6 read error, sector=1952415520
Jul  5 01:38:32 UNRAID kernel: md: disk6 read error, sector=1952415528
Jul  5 01:38:32 UNRAID kernel: md: disk6 read error, sector=1952415536

 

Regularly scheduled parity checks end ok, no issues there.  No other known issues with data on the drive and all SMART tests succeed.

 

Is this warning to be believed?

 

Going back to see other read error threads there's been a lot of talk of the multi zone error rates and things of that nature when suggesting to replace disks, well here's Disk 6's stats:

 

ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    270
  3 Spin_Up_Time            POS--K   187   184   021    -    5650
  4 Start_Stop_Count        -O--CK   100   100   000    -    59
  5 Reallocated_Sector_Ct   PO--CK   200   200   140    -    0
  7 Seek_Error_Rate         -OSR-K   100   253   000    -    0
  9 Power_On_Hours          -O--CK   053   053   000    -    34890
 10 Spin_Retry_Count        -O--CK   100   253   000    -    0
 11 Calibration_Retry_Count -O--CK   100   253   000    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    56
192 Power-Off_Retract_Count -O--CK   200   200   000    -    36
193 Load_Cycle_Count        -O--CK   196   196   000    -    14032
194 Temperature_Celsius     -O---K   122   103   000    -    28
196 Reallocated_Event_Count -O--CK   200   200   000    -    0
197 Current_Pending_Sector  -O--CK   200   200   000    -    0
198 Offline_Uncorrectable   ----CK   100   253   000    -    0
199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0
200 Multi_Zone_Error_Rate   ---R--   200   200   000    -    47

 

In comparison here is Disk 7's stats which would appear to be a more likely candidate for replacement, yet prompt no issues.

 

ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
  1 Raw_Read_Error_Rate     POSR-K   200   200   051    -    12655
  3 Spin_Up_Time            POS--K   198   182   021    -    7083
  4 Start_Stop_Count        -O--CK   094   094   000    -    6057
  5 Reallocated_Sector_Ct   PO--CK   200   200   140    -    0
  7 Seek_Error_Rate         -OSR-K   199   199   000    -    71
  9 Power_On_Hours          -O--CK   046   046   000    -    39522
 10 Spin_Retry_Count        -O--CK   100   100   000    -    0
 11 Calibration_Retry_Count -O--CK   100   100   000    -    0
 12 Power_Cycle_Count       -O--CK   100   100   000    -    116
192 Power-Off_Retract_Count -O--CK   200   200   000    -    56
193 Load_Cycle_Count        -O--CK   165   165   000    -    105243
194 Temperature_Celsius     -O---K   122   107   000    -    30
196 Reallocated_Event_Count -O--CK   200   200   000    -    0
197 Current_Pending_Sector  -O--CK   200   200   000    -    0
198 Offline_Uncorrectable   ----CK   200   200   000    -    0
199 UDMA_CRC_Error_Count    -O--CK   200   200   000    -    0
200 Multi_Zone_Error_Rate   ---R--   191   191   000    -    3398

 

Should disk6 in fact be replaced or is 4 sectors not enough of an issue to worry about and Unraid is just being super sensitive?

 

I'm certainly sure that over the years I've ran drives for a multitude of years with read errors and such and never knew about them and the computer just blissfully kept on chugging along with no problem.

 

Thanks for the info.

[ChatNoir]

2 hours ago, Energen said:

Should disk6 in fact be replaced or is 4 sectors not enough of an issue to worry about and Unraid is just being super sensitive?

You should probably run an extended SMART test on the suspect drives to have better information. And you can share your diagnostics once the tests are done if you need help deciding.