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Should I return/exchange (SMART values changed during pre-clear)

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This is actually my first totally new disk for unRaid, and running pre-clear the below came up.  Should I be worried?

 

========================================================================1.15
== invoked as: ./preclear_disk.sh /dev/sdf
== ST3000DM001-1ER166   ZA500E03
== Disk /dev/sdf has been successfully precleared
== with a starting sector of 1 
== Ran 1 cycle
==
== Using :Read block size = 1000448 Bytes
== Last Cycle's Pre Read Time  : 6:58:45 (119 MB/s)
== Last Cycle's Zeroing time   : 5:15:13 (158 MB/s)
== Last Cycle's Post Read Time : 12:01:26 (69 MB/s)
== Last Cycle's Total Time     : 24:16:23
==
== Total Elapsed Time 24:16:23
==
== Disk Start Temperature: 25C
==
== Current Disk Temperature: 33C, 
==
============================================================================
** Changed attributes in files: /tmp/smart_start_sdf  /tmp/smart_finish_sdf
                ATTRIBUTE   NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS      RAW_VALUE
      Raw_Read_Error_Rate =   116     100            6        ok          109955480
         Spin_Retry_Count =   100     100           97        near_thresh 0
         End-to-End_Error =   100     100           99        near_thresh 0
  Airflow_Temperature_Cel =    68      75           45        near_thresh 32
      Temperature_Celsius =    32      25            0        ok          32
No SMART attributes are FAILING_NOW

0 sectors were pending re-allocation before the start of the preclear.
0 sectors were pending re-allocation after pre-read in cycle 1 of 1.
0 sectors were pending re-allocation after zero of disk in cycle 1 of 1.
0 sectors are pending re-allocation at the end of the preclear,
    the number of sectors pending re-allocation did not change.
0 sectors had been re-allocated before the start of the preclear.
0 sectors are re-allocated at the end of the preclear,
    the number of sectors re-allocated did not change. 
============================================================================

That disk looks fine.  All drive encounter raw read errors ... Seagate reports those, but it's not an issue.

 

... and the fact the temps changed doesn't matter -- they still look fine.  (It'd be surprising if they didn't change  :) )

 

 

 

  • Author

First totally new drive I've used so wanted to make sure about the raw_read stuff, I know the temps changed don't really matter (unless they go freakishly high).

 

Thanks!

No sectors re-allocated which is the big thing. I agree that looks like a good drive. Good luck!

since we are on the subject and I dont feel like starting a new thread over a simple question, is Command Timeout of any concern either?

 

Event: unRAID Disk 1 SMART health [188]

Subject: Warning [TOWER] - command timeout is 237

Description: ST31000528AS_9VP24Z8H (sdc)

Importance: warning

 

Its always been at that value.

 

I think SMART values clarifications should be added to the wiki.. by someone who understands it better than I do.

  • Community Expert

since we are on the subject and I dont feel like starting a new thread over a simple question, is Command Timeout of any concern either?

 

Event: unRAID Disk 1 SMART health [188]

Subject: Warning [TOWER] - command timeout is 237

Description: ST31000528AS_9VP24Z8H (sdc)

Importance: warning

 

Its always been at that value.

 

I think SMART values clarifications should be added to the wiki.. by someone who understands it better than I do.

Known ATA S.M.A.R.T. attributes

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