9120: S.M.A.R.T. Attribute: Head Stability

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Applies to: 

Operating Systems: 

Attribute ID: 185 (0xB9)

Hard drives, supporting this attribute

Western Digital


Head Stability S.M.A.R.T. parameter is a Western Digital attribute.


Although this parameter is not considered critical by the most hardware vendors, degradation of this parameter may indicate electromechanical problems of the disk. Regular backup is recommended. If no other (critical) parameters report a problem, hardware replacement is recommended on mission critical systems only.

More information

See also: S.M.A.R.T. Monitoring.