Abstract: A method of determining defects on a media of an information storage device includes reading information representing data from a magnetized portion of the media, processing the read signal with discrete time signal processing, and detecting a phase shift in the read signal over a selected threshold. The method also includes sending an indication of a defect in the media in response to detecting the phase shift over the selected threshold, determining the location of the media of the defect, and storing the location of the defect in memory.

Abstract: Embodiments of the present invention relate to systems, methods, and computer readable media for storing data on a rotatable storage medium. A hard drive having a rotatable storage medium is configured with different environmental tolerance characteristics for different sides of the rotatable storage medium. A first side is configured to have a higher tolerance to environmental factors such as shock and temperature by modifying features of the first side of the media and the read/write mechanism configured to interact with the first side. A second side of the storage medium is configured with lower environmental tolerances, thus allowing for higher performance. This configuration enables the hard drive to perform at a higher level of performance when facing less adverse environmental conditions while still remaining functional when facing more adverse environmental conditions.