Placement of Data in Multi-Zone Disk Drives

This paper describes a placement technique for the layout of les across the surface of a multi zone magnetic disk drive to maximize its bandwidth It argues for a le system that monitors the frequency of access to the les and modi es the placement of les in order to respond to an evolving pattern of le accesses Such a le system is particularly useful for repositories whose primary functionality is to disseminate information such as the World Wide Web along with thousands of ftp sites that render documents graphic pictures images audio clips and full motion video available on the Internet Employing software techniques to enhance the disk performance is important because its mechanical nature has limited its hardware performance improvements at to percent a year