Attribute ID: 222 (0xDE)
Hard drives, supporting this attribute
Samsung, Seagate, IBM (Hitachi), Fujitsu (not all models), Maxtor, Western Digital (not all models)
Loaded Hours S.M.A.R.T. parameter indicates a number of powered on hours. This value is constantly increasing (once per every hour).
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.