Edward G Grochowski

Future trends in hard disk drives

Magnetic hard disk drives have significantly improved in size, performance and cost due to many technological innovations; including magnetoresistive heads, low noise thin film disks, PRML channels and advanced mechanical actuators and motors. By analyzing specification trends of each new disk drive design, a perspective of this evolution can be developed and design characteristics of future disk drives can be estimated.

Outlook for maintaining areal density growth in magnetic recording

Historical trends and advanced component work are cited as reason for optimism that the current progress in storage areal density will continue smoothly to at least 5 Gigabits per square inch by the year 2000. >

Dynamic statistical control of manufacturing test

A method for controlling manufacturing tests in real time by statistically predicting test behavior is described. This statistical prediction is used to eliminate certain tests in sequential testing. Analytic methods for clustering tests for more efficient execution and an algorithm for predictive testing are presented. A relational database using structured-query-language system, called SQL/DB2 is proposed; its structure allows efficient retrieval of the information needed for test prediction, test clustering, and predictive testing. A test-system architecture based on personal computers is presented.<<ETX>>