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What Is Hard Drive Smart

What Is Hard Drive Smart
What Does Smart Do?

Data on a hard disk is stored in a magnetised layer effectively on one of the drives internal platters. The internal platters are extremely sensitive and due to a number of different reasons including heat and or age the platter loses its ability to store data in various clusters or individual sectors of the drive.

In the early years of drive technology hard drives had a much higher failure rate to to bad sectors but technology developed (SMART) that allowed a data that would normally be stored in a bad sector (and cause the drive to fail) to be directed (remapped) to a reserved usable area elsewhere on the disk.

The net effect of this is in reality a fault that could cause a drive to fail can remain hidden without apparent loss of drive stability. SMART "handles" the problem that still exists, but increases the reliability of the drive in the background.


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