I ran preclear twice on the same WD20EARS disk. The first time I got this in the summary:
Changed attributes in files: /tmp/smart_start_hda /tmp/smart_finish_hda
ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE
Temperature_Celsius = 115 114 0 ok 37
Reallocated_Event_Count = 198 199 0 ok 2
No SMART attributes are FAILING_NOW
1 sector was pending re-allocation before the start of the preclear.
1 sector was pending re-allocation after pre-read in cycle 1 of 1.
1 sector was pending re-allocation after zero of disk in cycle 1 of 1.
1 sector is pending re-allocation at the end of the preclear,
the number of sectors pending re-allocation did not change.
2 sectors had been re-allocated before the start of the preclear.
4 sectors are re-allocated at the end of the preclear,
a change of 2 in the number of sectors re-allocated.
The second time, for the same disk:
<code>
rt_start_sdh /tmp/smart_finish_sdh
ATTRIBUTE NEW_VAL OLD_VAL FAILURE_THRESHOLD STATUS RAW_VALUE
Seek_Error_Rate = 100 200 0 ok 0
Temperature_Celsius = 109 110 0 ok 43
No SMART attributes are FAILING_NOW
1 sector was pending re-allocation before the start of the preclear.
1 sector was pending re-allocation after pre-read in cycle 1 of 1.
1 sector was pending re-allocation after zero of disk in cycle 1 of 1.
1 sector is pending re-allocation at the end of the preclear,
the number of sectors pending re-allocation did not change.
4 sectors had been re-allocated before the start of the preclear.
4 sectors are re-allocated at the end of the preclear,
the number of sectors re-allocated did not change.
Can I trust this disk in the array?
Thank you