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Media Defect Management Technique Via Access Method for Personal Computer Hardfiles

IP.com Disclosure Number: IPCOM000057626D
Original Publication Date: 1988-Jun-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Keener, DS [+details]

Abstract

This article describes a method of managing media defects on personal computer hardfiles in a manner which provides efficiency in data storage capacity, transparency to the user and effectively hides the presence of defects. This allows the use of hardfile technologies which have cost, capacity and performance advantages at the expense of media defects. (Image Omitted) Media defects are locations of the disk surface which are unusable for reliable data storage. They are due to parameters inherent in disk technologies, such as surface burnish and coercivity of the media. They are not defects in the sense that they should not be there but rather they are expected due to the nature of the technology. As capacity and density increase, so will the number of media defects.