Self Monitoring Analysis and Reporting Technology is a method by which a device monitors, stores and analyzes information relative to its internal performance & calibration factors to determine the likelihood of a future degrading or fault condition. S.M.A.R.T. has been built into most hard disk drives manufactured in the past several years.
If this SMART technology is present in your drive, by default, it is set to be disabled on your drive. For making use of the S.M.A.R.T. feature you would require a software (or BIOS) that enables and monitors the S.M.A.R.T status of your hard drive, and an operating system that supports the S.M.A.R.T feature. For example, Windows 95 or higher. Some BIOS contain this software, otherwise EZ-SMART from StorageSoft is an example of a utility that can enable and monitor the SMART status of your drive (only available for Windows 98 and Windows NT).