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Disk health - grown defect list - LOG Sense Error

Bon Jour

 

I'm running an Fas3140 Metro Cluster with Ds14mk4 and X276 Disks on Ontap 7.3.1.

 

In the ASUP i see Disks with over 600 defects and many LOG Sense errors on it. for eg:  

0a.17

CMD       Errs w/delay     Errs corrected     Corr Algorithm          Bytes processed    Uncorrected

------   ------------     --------------     --------------          ---------------    -----------

Read           154070                536                536          308937601246040            155

Write             247                  0                  0           45686278527760              0

Verify         115764                  0                  0          103987403472680            110

 ...

Disk 0a.17 grown defect list

Defect   (cyl    head   sector)

  243        12319043843
  359        025319043843
  360        11819043843
  364        11119043843
  368        11019043843
  402        224919043843
  410        025219043843
  473        125219043843

(shorted, only sector 19043843)

 

I'am wondering why these disk(s) are not going to fail. Is there a Bug in Ontap ?  

 

I still know that the threshold for disk fail is 5 on a sector. And in some case i read that disk have manualy set to fail.  

 

Thanks a lot

Cheers

 

To.Bi