I attach a smart report. immediately after preclearing a disk, that left me a little worried.

 

Attribute 195 is running rather high.

 

But after the preclear I see this:

** Changed attributes in files: /tmp/smart_start_sdc  /tmp/smart_finish_sdc

                ATTRIBUTE  NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS      RAW_VALUE

  Airflow_Temperature_Cel =    78      81            0        ok          22

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.

 

So, no need to worry?

smart.txt

Run pre-clear 1 or 2 more times to be sure; but otherwise that drive looks fine.

How bad is a high value for  smart attribute 195: Hardware_ECC_Recovered ?

How bad is a high value for  smart attribute 195: Hardware_ECC_Recovered ?

Is it changing the normalized value to the close to the failure threshold?

The DISK manufacturers don't tell us the limits.  ALL drives use hardware error-correction.  Some report it, some do not.

 

The actual RAW number is meaningless to us:

195 Hardware_ECC_Recovered  0x001a  100  100  000    Old_age  Always      -      33894902

 

The normalized value of 100 compared to a failure threshold of 0 is all you need to worry about.

 

Enjoy your new disk.  You can ignore most RAW values.