Attribute ID: 228 (0xE4)
Hard drives, supporting this attribute
Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)
Power-Off Retract Cycle S.M.A.R.T. parameter indicates a number of times the head was retracted as a result of power loss.
This parameter is considered informational by the most hardware vendors. Although degradation of this parameter can be an indicator of drive aging and/or potential electromechanical problems, it does not directly indicate imminent drive failure. Regular backup is recommended. Pay closer attention to other parameters and overall drive health.
See also: S.M.A.R.T. Monitoring.